{
  "type": "ask",
  "input": {
    "type": "filter",
    "input": {
      "type": "project",
      "input": {
        "type": "extend",
        "input": {
          "type": "group",
          "input": {
            "type": "bgp",
            "patterns": [
              {
                "type": "pattern",
                "termType": "Quad",
                "subject": {
                  "termType": "Variable",
                  "value": "g_0"
                },
                "predicate": {
                  "termType": "NamedNode",
                  "value": "http://www.example.org/p1"
                },
                "object": {
                  "termType": "Variable",
                  "value": "o"
                },
                "graph": {
                  "termType": "DefaultGraph",
                  "value": ""
                }
              }
            ]
          },
          "variables": [],
          "aggregates": [
            {
              "type": "expression",
              "subType": "aggregate",
              "aggregator": "group_concat",
              "expression": {
                "type": "expression",
                "subType": "term",
                "term": {
                  "termType": "Variable",
                  "value": "o"
                }
              },
              "separator": " ",
              "distinct": false,
              "variable": {
                "termType": "Variable",
                "value": "var0"
              }
            }
          ]
        },
        "variable": {
          "termType": "Variable",
          "value": "g"
        },
        "expression": {
          "type": "expression",
          "subType": "term",
          "term": {
            "termType": "Variable",
            "value": "var0"
          }
        }
      },
      "variables": [
        {
          "termType": "Variable",
          "value": "g"
        }
      ]
    },
    "expression": {
      "type": "expression",
      "subType": "operator",
      "operator": "||",
      "args": [
        {
          "type": "expression",
          "subType": "operator",
          "operator": "=",
          "args": [
            {
              "type": "expression",
              "subType": "term",
              "term": {
                "termType": "Variable",
                "value": "g"
              }
            },
            {
              "type": "expression",
              "subType": "term",
              "term": {
                "termType": "Literal",
                "value": "1 22",
                "datatype": {
                  "termType": "NamedNode",
                  "value": "http://www.w3.org/2001/XMLSchema#string"
                }
              }
            }
          ]
        },
        {
          "type": "expression",
          "subType": "operator",
          "operator": "=",
          "args": [
            {
              "type": "expression",
              "subType": "term",
              "term": {
                "termType": "Variable",
                "value": "g"
              }
            },
            {
              "type": "expression",
              "subType": "term",
              "term": {
                "termType": "Literal",
                "value": "22 1",
                "datatype": {
                  "termType": "NamedNode",
                  "value": "http://www.w3.org/2001/XMLSchema#string"
                }
              }
            }
          ]
        }
      ]
    }
  }
}