{
  "type": "project",
  "input": {
    "type": "path",
    "subject": {
      "termType": "NamedNode",
      "value": "http://www.example.org/instance#a"
    },
    "predicate": {
      "type": "nps",
      "iris": [
        {
          "termType": "NamedNode",
          "value": "http://www.example.org/schema#p1"
        },
        {
          "termType": "NamedNode",
          "value": "http://www.example.org/schema#p2"
        }
      ]
    },
    "object": {
      "termType": "Variable",
      "value": "x"
    },
    "graph": {
      "termType": "DefaultGraph",
      "value": ""
    }
  },
  "variables": [
    {
      "termType": "Variable",
      "value": "x"
    }
  ]
}