{
  "type": "from",
  "input": {
    "type": "project",
    "input": {
      "type": "graph",
      "input": {
        "type": "bgp",
        "patterns": [
          {
            "type": "pattern",
            "termType": "Quad",
            "subject": {
              "termType": "Variable",
              "value": "x"
            },
            "predicate": {
              "termType": "NamedNode",
              "value": "http://xmlns.com/foaf/0.1/mbox"
            },
            "object": {
              "termType": "NamedNode",
              "value": "mailto:bob@work.example"
            },
            "graph": {
              "termType": "DefaultGraph",
              "value": ""
            }
          },
          {
            "type": "pattern",
            "termType": "Quad",
            "subject": {
              "termType": "Variable",
              "value": "x"
            },
            "predicate": {
              "termType": "NamedNode",
              "value": "http://xmlns.com/foaf/0.1/nick"
            },
            "object": {
              "termType": "Variable",
              "value": "nick"
            },
            "graph": {
              "termType": "DefaultGraph",
              "value": ""
            }
          }
        ]
      },
      "name": {
        "termType": "NamedNode",
        "value": "http://example.org/foaf/bobFoaf"
      }
    },
    "variables": [
      {
        "termType": "Variable",
        "value": "nick"
      }
    ]
  },
  "default": [],
  "named": [
    {
      "termType": "NamedNode",
      "value": "http://example.org/foaf/aliceFoaf"
    },
    {
      "termType": "NamedNode",
      "value": "http://example.org/foaf/bobFoaf"
    }
  ]
}