{
  "context": [
    {
      "type": "contextDef",
      "subType": "prefix",
      "key": "foaf",
      "value": {
        "type": "term",
        "subType": "namedNode",
        "value": "http://xmlns.com/foaf/0.1/",
        "loc": {
          "sourceLocationType": "source",
          "start": 15,
          "end": 43
        }
      },
      "loc": {
        "sourceLocationType": "source",
        "start": 0,
        "end": 43
      }
    }
  ],
  "subType": "describe",
  "variables": [
    {
      "type": "term",
      "subType": "variable",
      "value": "x",
      "loc": {
        "sourceLocationType": "source",
        "start": 53,
        "end": 55
      }
    },
    {
      "type": "term",
      "subType": "variable",
      "value": "y",
      "loc": {
        "sourceLocationType": "source",
        "start": 56,
        "end": 58
      }
    },
    {
      "type": "term",
      "subType": "namedNode",
      "value": "http://example.org/",
      "loc": {
        "sourceLocationType": "source",
        "start": 59,
        "end": 80
      }
    }
  ],
  "datasets": {
    "type": "datasetClauses",
    "clauses": [],
    "loc": {
      "sourceLocationType": "noMaterialize"
    }
  },
  "where": {
    "type": "pattern",
    "subType": "group",
    "patterns": [
      {
        "type": "pattern",
        "subType": "bgp",
        "triples": [
          {
            "type": "triple",
            "subject": {
              "type": "term",
              "subType": "variable",
              "value": "x",
              "loc": {
                "sourceLocationType": "source",
                "start": 91,
                "end": 93
              }
            },
            "predicate": {
              "type": "term",
              "subType": "namedNode",
              "value": "knows",
              "loc": {
                "sourceLocationType": "source",
                "start": 94,
                "end": 104
              },
              "prefix": "foaf"
            },
            "object": {
              "type": "term",
              "subType": "variable",
              "value": "y",
              "loc": {
                "sourceLocationType": "source",
                "start": 105,
                "end": 107
              }
            },
            "loc": {
              "sourceLocationType": "source",
              "start": 91,
              "end": 107
            }
          }
        ],
        "loc": {
          "sourceLocationType": "source",
          "start": 91,
          "end": 107
        }
      }
    ],
    "loc": {
      "sourceLocationType": "source",
      "start": 90,
      "end": 108
    }
  },
  "solutionModifiers": {},
  "loc": {
    "sourceLocationType": "inlinedSource",
    "newSource": "PREFIX foaf:   <http://xmlns.com/foaf/0.1/>\nDESCRIBE ?x ?y <http://example.org/>\nWHERE    {?x foaf:knows ?y}\n",
    "start": 0,
    "end": 9007199254740991,
    "loc": {
      "sourceLocationType": "source",
      "start": 0,
      "end": 108
    },
    "startOnNew": 0,
    "endOnNew": 108
  },
  "type": "query"
}