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  "context": [
    {
      "type": "contextDef",
      "subType": "prefix",
      "key": "",
      "value": {
        "type": "term",
        "subType": "namedNode",
        "value": "http://example.com/ns#",
        "loc": {
          "sourceLocationType": "source",
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          "end": 33
        }
      },
      "loc": {
        "sourceLocationType": "source",
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  "subType": "select",
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    "type": "pattern",
    "subType": "group",
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        "type": "pattern",
        "subType": "bgp",
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            "type": "tripleCollection",
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                "type": "triple",
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                    "sourceLocationType": "source",
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                  },
                  "prefix": ""
                },
                "predicate": {
                  "type": "term",
                  "subType": "variable",
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                    "sourceLocationType": "source",
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                  }
                },
                "object": {
                  "type": "term",
                  "subType": "namedNode",
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                    "sourceLocationType": "source",
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                  "prefix": ""
                },
                "annotations": [],
                "loc": {
                  "sourceLocationType": "source",
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                }
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            ],
            "identifier": {
              "type": "term",
              "subType": "blankNode",
              "loc": {
                "sourceLocationType": "noMaterialize"
              },
              "label": "g_0"
            },
            "loc": {
              "sourceLocationType": "source",
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              "end": 62
            }
          },
          {
            "type": "triple",
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              "type": "term",
              "subType": "blankNode",
              "loc": {
                "sourceLocationType": "noMaterialize"
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              "label": "g_0"
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            "predicate": {
              "type": "term",
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                "sourceLocationType": "source",
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              "prefix": ""
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                    "prefix": ""
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                  "object": {
                    "type": "term",
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                      "sourceLocationType": "source",
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                  "annotations": [],
                  "loc": {
                    "sourceLocationType": "source",
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              "identifier": {
                "type": "term",
                "subType": "blankNode",
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                  "sourceLocationType": "noMaterialize"
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                "sourceLocationType": "source",
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            "type": "tripleCollection",
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                "type": "triple",
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                      "type": "triple",
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                      "sourceLocationType": "noMaterialize"
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                        "sourceLocationType": "source",
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                  "identifier": {
                    "type": "term",
                    "subType": "blankNode",
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                      "sourceLocationType": "noMaterialize"
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                    "sourceLocationType": "source",
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                "annotations": [],
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                  "sourceLocationType": "source",
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            "identifier": {
              "type": "term",
              "subType": "blankNode",
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                "sourceLocationType": "noMaterialize"
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            "loc": {
              "sourceLocationType": "source",
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          },
          {
            "type": "triple",
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              "type": "term",
              "subType": "blankNode",
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                "sourceLocationType": "noMaterialize"
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              "type": "term",
              "subType": "namedNode",
              "value": "q",
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                "sourceLocationType": "source",
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              },
              "prefix": ""
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              "type": "tripleCollection",
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              "triples": [
                {
                  "type": "triple",
                  "subject": {
                    "type": "tripleCollection",
                    "subType": "reifiedTriple",
                    "triples": [
                      {
                        "type": "triple",
                        "subject": {
                          "type": "term",
                          "subType": "blankNode",
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                            "sourceLocationType": "source",
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                            "end": 139
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                          "label": "g_6"
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                          "type": "term",
                          "subType": "variable",
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                          "loc": {
                            "sourceLocationType": "source",
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                        "object": {
                          "type": "term",
                          "subType": "namedNode",
                          "value": "z",
                          "loc": {
                            "sourceLocationType": "source",
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                            "end": 145
                          },
                          "prefix": ""
                        },
                        "annotations": [],
                        "loc": {
                          "sourceLocationType": "source",
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                          "end": 145
                        }
                      }
                    ],
                    "identifier": {
                      "type": "term",
                      "subType": "blankNode",
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                        "sourceLocationType": "noMaterialize"
                      },
                      "label": "g_7"
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                    "loc": {
                      "sourceLocationType": "source",
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                  },
                  "predicate": {
                    "type": "term",
                    "subType": "namedNode",
                    "value": "p",
                    "loc": {
                      "sourceLocationType": "source",
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                      "end": 151
                    },
                    "prefix": ""
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                  "object": {
                    "type": "tripleCollection",
                    "subType": "reifiedTriple",
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                        "loc": {
                          "sourceLocationType": "source",
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                      }
                    ],
                    "identifier": {
                      "type": "term",
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                        "sourceLocationType": "noMaterialize"
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                    "loc": {
                      "sourceLocationType": "source",
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                    }
                  },
                  "annotations": [],
                  "loc": {
                    "sourceLocationType": "source",
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                }
              ],
              "identifier": {
                "type": "term",
                "subType": "blankNode",
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                  "sourceLocationType": "noMaterialize"
                },
                "label": "g_10"
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              "loc": {
                "sourceLocationType": "source",
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            },
            "annotations": [],
            "loc": {
              "sourceLocationType": "source",
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        ],
        "loc": {
          "sourceLocationType": "source",
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        }
      }
    ],
    "loc": {
      "sourceLocationType": "source",
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      "end": 172
    }
  },
  "solutionModifiers": {},
  "datasets": {
    "type": "datasetClauses",
    "clauses": [],
    "loc": {
      "sourceLocationType": "noMaterialize"
    }
  },
  "variables": [
    {
      "type": "wildcard",
      "loc": {
        "sourceLocationType": "source",
        "start": 42,
        "end": 43
      }
    }
  ],
  "loc": {
    "sourceLocationType": "inlinedSource",
    "newSource": "PREFIX : <http://example.com/ns#>\n\nSELECT * {\n\n  <<:x ?R :z >> :p <<:a :b ?C >> .\n\n  << <<:x ?R :z >> :p <<:a :b [] >> >>\n     :q\n  << <<[] ?R :z >> :p <<:a :b [] >> >> .\n}\n",
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    "end": 9007199254740991,
    "loc": {
      "sourceLocationType": "source",
      "start": 0,
      "end": 172
    },
    "startOnNew": 0,
    "endOnNew": 172
  },
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}