{
  "type": "update",
  "updates": [
    {
      "context": [
        {
          "type": "contextDef",
          "subType": "prefix",
          "key": "",
          "value": {
            "type": "term",
            "subType": "namedNode",
            "value": "http://example.com/ns#",
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              "sourceLocationType": "source",
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          },
          "loc": {
            "sourceLocationType": "source",
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        }
      ],
      "operation": {
        "type": "updateOperation",
        "subType": "modify",
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            "type": "pattern",
            "subType": "bgp",
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                "type": "triple",
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                    "sourceLocationType": "source",
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                "predicate": {
                  "type": "term",
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                "object": {
                  "type": "tripleCollection",
                  "subType": "reifiedTriple",
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                        },
                        "prefix": ""
                      },
                      "object": {
                        "type": "term",
                        "subType": "variable",
                        "value": "O",
                        "loc": {
                          "sourceLocationType": "source",
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                          "end": 65
                        }
                      },
                      "annotations": [],
                      "loc": {
                        "sourceLocationType": "source",
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                        "end": 65
                      }
                    }
                  ],
                  "identifier": {
                    "type": "term",
                    "subType": "blankNode",
                    "loc": {
                      "sourceLocationType": "noMaterialize"
                    },
                    "label": "g_0"
                  },
                  "loc": {
                    "sourceLocationType": "source",
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                },
                "annotations": [
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                    "type": "tripleCollection",
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                      {
                        "type": "triple",
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                          "type": "term",
                          "subType": "variable",
                          "value": "Y",
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                            "sourceLocationType": "source",
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                            "end": 74
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                        "object": {
                          "type": "term",
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                            "sourceLocationType": "source",
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                        "annotations": [],
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                          "sourceLocationType": "source",
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                        "sourceLocationType": "noMaterialize"
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                    "loc": {
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                ],
                "loc": {
                  "sourceLocationType": "source",
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              }
            ],
            "loc": {
              "sourceLocationType": "source",
              "start": 48,
              "end": 80
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          }
        ],
        "delete": [],
        "where": {
          "type": "pattern",
          "subType": "group",
          "patterns": [
            {
              "type": "pattern",
              "subType": "bgp",
              "triples": [
                {
                  "type": "triple",
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                    "type": "term",
                    "subType": "variable",
                    "value": "S",
                    "loc": {
                      "sourceLocationType": "source",
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                  "predicate": {
                    "type": "term",
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                  },
                  "object": {
                    "type": "tripleCollection",
                    "subType": "reifiedTriple",
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                      {
                        "type": "triple",
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                            "sourceLocationType": "source",
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                            "end": 105
                          },
                          "prefix": ""
                        },
                        "predicate": {
                          "type": "term",
                          "subType": "namedNode",
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                            "sourceLocationType": "source",
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                            "end": 108
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                          "prefix": ""
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                        "object": {
                          "type": "term",
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                          "loc": {
                            "sourceLocationType": "source",
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                        "annotations": [],
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                    ],
                    "identifier": {
                      "type": "term",
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                        "sourceLocationType": "noMaterialize"
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                    "loc": {
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                          "type": "triple",
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                              "sourceLocationType": "noMaterialize"
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                            "type": "term",
                            "subType": "variable",
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                            "loc": {
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                              "end": 120
                            }
                          },
                          "object": {
                            "type": "term",
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                              "sourceLocationType": "source",
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                              "end": 123
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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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                    }
                  ],
                  "loc": {
                    "sourceLocationType": "source",
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                }
              ],
              "loc": {
                "sourceLocationType": "source",
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            }
          ],
          "loc": {
            "sourceLocationType": "source",
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          }
        },
        "from": {
          "type": "datasetClauses",
          "clauses": [],
          "loc": {
            "sourceLocationType": "noMaterialize"
          }
        },
        "loc": {
          "sourceLocationType": "source",
          "start": 35,
          "end": 128
        }
      }
    }
  ],
  "loc": {
    "sourceLocationType": "inlinedSource",
    "newSource": "PREFIX : <http://example.com/ns#>\n\nINSERT {\n    ?S ?P << :a :b ?O >> {| ?Y ?Z |}\n} WHERE {\n   ?S ?P << :a :b ?O >> {| ?Y ?Z |}\n}\n",
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    "end": 9007199254740991,
    "loc": {
      "sourceLocationType": "source",
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      "end": 128
    },
    "startOnNew": 0,
    "endOnNew": 128
  }
}