{
  "type": "project",
  "input": {
    "type": "bgp",
    "patterns": [
      {
        "type": "pattern",
        "termType": "Quad",
        "subject": {
          "termType": "Variable",
          "value": "e_a"
        },
        "predicate": {
          "termType": "NamedNode",
          "value": "http://example.org/ns#p1"
        },
        "object": {
          "termType": "NamedNode",
          "value": "http://example.org/ns#q1"
        },
        "graph": {
          "termType": "DefaultGraph",
          "value": ""
        }
      },
      {
        "type": "pattern",
        "termType": "Quad",
        "subject": {
          "termType": "Variable",
          "value": "e_a"
        },
        "predicate": {
          "termType": "NamedNode",
          "value": "http://example.org/ns#p2"
        },
        "object": {
          "termType": "NamedNode",
          "value": "http://example.org/ns#q2"
        },
        "graph": {
          "termType": "DefaultGraph",
          "value": ""
        }
      }
    ]
  },
  "variables": []
}