{
  "type": "project",
  "input": {
    "type": "orderby",
    "input": {
      "type": "join",
      "input": [
        {
          "type": "bgp",
          "patterns": [
            {
              "type": "pattern",
              "termType": "Quad",
              "subject": {
                "termType": "Variable",
                "value": "g_0"
              },
              "predicate": {
                "termType": "NamedNode",
                "value": "http://www.w3.org/2000/01/rdf-schema#label"
              },
              "object": {
                "termType": "Variable",
                "value": "L"
              },
              "graph": {
                "termType": "DefaultGraph",
                "value": ""
              }
            },
            {
              "type": "pattern",
              "termType": "Quad",
              "subject": {
                "termType": "Variable",
                "value": "O"
              },
              "predicate": {
                "termType": "NamedNode",
                "value": "http://www.example.orghasItem"
              },
              "object": {
                "termType": "Variable",
                "value": "g_0"
              },
              "graph": {
                "termType": "DefaultGraph",
                "value": ""
              }
            }
          ]
        },
        {
          "type": "slice",
          "input": {
            "type": "distinct",
            "input": {
              "type": "project",
              "input": {
                "type": "orderby",
                "input": {
                  "type": "bgp",
                  "patterns": [
                    {
                      "type": "pattern",
                      "termType": "Quad",
                      "subject": {
                        "termType": "Variable",
                        "value": "O"
                      },
                      "predicate": {
                        "termType": "NamedNode",
                        "value": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type"
                      },
                      "object": {
                        "termType": "NamedNode",
                        "value": "http://www.example.orgOrder"
                      },
                      "graph": {
                        "termType": "DefaultGraph",
                        "value": ""
                      }
                    }
                  ]
                },
                "expressions": [
                  {
                    "type": "expression",
                    "subType": "term",
                    "term": {
                      "termType": "Variable",
                      "value": "O"
                    }
                  }
                ]
              },
              "variables": [
                {
                  "termType": "Variable",
                  "value": "O"
                }
              ]
            }
          },
          "start": 0,
          "length": 2
        }
      ]
    },
    "expressions": [
      {
        "type": "expression",
        "subType": "term",
        "term": {
          "termType": "Variable",
          "value": "L"
        }
      }
    ]
  },
  "variables": [
    {
      "termType": "Variable",
      "value": "L"
    }
  ]
}