{
  "_scenario": "three-atom-chain",
  "expected_bindings": {
    "columns": [
      "a",
      "b",
      "c"
    ],
    "rows": [
      [
        {
          "str": "node:1"
        },
        {
          "str": "node:2"
        },
        {
          "str": "node:3"
        }
      ]
    ]
  },
  "facts": {
    "edge": [
      [
        {
          "str": "node:1"
        },
        {
          "str": "node:2"
        },
        {
          "str": "edge:1"
        }
      ],
      [
        {
          "str": "node:2"
        },
        {
          "str": "node:3"
        },
        {
          "str": "edge:2"
        }
      ]
    ],
    "node": [
      [
        {
          "str": "node:1"
        }
      ],
      [
        {
          "str": "node:2"
        }
      ],
      [
        {
          "str": "node:3"
        }
      ]
    ]
  },
  "query": {
    "nodes": [
      {
        "action": {
          "scan": {
            "columns": [
              {
                "var": "a"
              },
              {
                "var": "b"
              },
              {
                "var": "_w0_2"
              }
            ],
            "table": "edge"
          }
        },
        "id": 1
      },
      {
        "action": {
          "scan": {
            "columns": [
              {
                "var": "b"
              },
              {
                "var": "c"
              },
              {
                "var": "_w1_2"
              }
            ],
            "table": "edge"
          }
        },
        "id": 2
      },
      {
        "action": {
          "scan": {
            "columns": [
              {
                "var": "a"
              }
            ],
            "table": "node"
          }
        },
        "id": 3
      },
      {
        "action": {
          "join": {
            "left": 1,
            "op": "left",
            "right": 3
          }
        },
        "id": 4
      },
      {
        "action": {
          "join": {
            "left": 2,
            "op": "left",
            "right": 4
          }
        },
        "id": 5
      },
      {
        "action": {
          "join": {
            "left": 5,
            "op": "right",
            "right": 4
          }
        },
        "id": 6
      },
      {
        "action": {
          "join": {
            "left": 6,
            "op": "right",
            "right": 3
          }
        },
        "id": 7
      },
      {
        "action": {
          "join": {
            "left": 6,
            "op": "natural",
            "right": 7
          }
        },
        "id": 8
      },
      {
        "action": {
          "join": {
            "left": 5,
            "op": "natural",
            "right": 8
          }
        },
        "id": 9
      }
    ],
    "root": 9
  },
  "schema": {
    "edge": 3,
    "node": 1
  }
}