{
  "context": [
    {
      "type": "contextDef",
      "subType": "prefix",
      "key": "",
      "value": {
        "type": "term",
        "subType": "namedNode",
        "value": "http://example/",
        "loc": {
          "sourceLocationType": "source",
          "start": 9,
          "end": 26
        }
      },
      "loc": {
        "sourceLocationType": "source",
        "start": 0,
        "end": 26
      }
    }
  ],
  "subType": "select",
  "where": {
    "type": "pattern",
    "subType": "group",
    "patterns": [
      {
        "type": "pattern",
        "subType": "bgp",
        "triples": [
          {
            "type": "triple",
            "subject": {
              "type": "term",
              "subType": "variable",
              "value": "s",
              "loc": {
                "sourceLocationType": "source",
                "start": 42,
                "end": 44
              }
            },
            "predicate": {
              "type": "term",
              "subType": "variable",
              "value": "p",
              "loc": {
                "sourceLocationType": "source",
                "start": 45,
                "end": 47
              }
            },
            "object": {
              "type": "term",
              "subType": "variable",
              "value": "o",
              "loc": {
                "sourceLocationType": "source",
                "start": 48,
                "end": 50
              }
            },
            "loc": {
              "sourceLocationType": "source",
              "start": 42,
              "end": 50
            }
          }
        ],
        "loc": {
          "sourceLocationType": "source",
          "start": 42,
          "end": 50
        }
      },
      {
        "type": "pattern",
        "subType": "filter",
        "expression": {
          "type": "expression",
          "subType": "patternOperation",
          "operator": "notexists",
          "args": {
            "type": "pattern",
            "subType": "group",
            "patterns": [
              {
                "type": "pattern",
                "subType": "bgp",
                "triples": [
                  {
                    "type": "triple",
                    "subject": {
                      "type": "term",
                      "subType": "namedNode",
                      "value": "a",
                      "loc": {
                        "sourceLocationType": "source",
                        "start": 74,
                        "end": 76
                      },
                      "prefix": ""
                    },
                    "predicate": {
                      "type": "term",
                      "subType": "namedNode",
                      "value": "b",
                      "loc": {
                        "sourceLocationType": "source",
                        "start": 77,
                        "end": 79
                      },
                      "prefix": ""
                    },
                    "object": {
                      "type": "term",
                      "subType": "namedNode",
                      "value": "c",
                      "loc": {
                        "sourceLocationType": "source",
                        "start": 80,
                        "end": 82
                      },
                      "prefix": ""
                    },
                    "loc": {
                      "sourceLocationType": "source",
                      "start": 74,
                      "end": 82
                    }
                  }
                ],
                "loc": {
                  "sourceLocationType": "source",
                  "start": 74,
                  "end": 82
                }
              }
            ],
            "loc": {
              "sourceLocationType": "source",
              "start": 72,
              "end": 84
            }
          },
          "loc": {
            "sourceLocationType": "source",
            "start": 61,
            "end": 84
          }
        },
        "loc": {
          "sourceLocationType": "source",
          "start": 54,
          "end": 84
        }
      }
    ],
    "loc": {
      "sourceLocationType": "source",
      "start": 37,
      "end": 86
    }
  },
  "solutionModifiers": {},
  "datasets": {
    "type": "datasetClauses",
    "clauses": [],
    "loc": {
      "sourceLocationType": "noMaterialize"
    }
  },
  "variables": [
    {
      "type": "wildcard",
      "loc": {
        "sourceLocationType": "source",
        "start": 34,
        "end": 35
      }
    }
  ],
  "loc": {
    "sourceLocationType": "inlinedSource",
    "newSource": "PREFIX : <http://example/>\nSELECT * \n{ \n  ?s ?p ?o \n  FILTER NOT EXISTS { :a :b :c }\n}\n",
    "start": 0,
    "end": 9007199254740991,
    "loc": {
      "sourceLocationType": "source",
      "start": 0,
      "end": 86
    },
    "startOnNew": 0,
    "endOnNew": 86
  },
  "type": "query"
}