{
  "type": "ShapeTest",
  "node": "http://a.example/s1",
  "shape": "http://a.example/S1",
  "solution": {
    "type": "TripleConstraintSolutions",
    "predicate": "http://a.example/p1",
    "solutions": [
      {
        "type": "TestedTriple",
        "subject": "http://a.example/s1",
        "predicate": "http://a.example/p1",
        "object": { "value": "ef" },
        "referenced": {
          "type": "ShapeOrResults",
          "solution": {
            "type": "NodeTest",
            "node": { "value": "ef" },
            "shape": "http://a.example/vc3",
            "shapeExpr": {
              "type": "NodeConstraint",
              "nodeKind": "literal",
              "pattern": ".*ef"
            }
          }
        }
      }
    ],
    "valueExpr": {
      "type": "ShapeRef",
      "reference": "http://a.example/vc4"
    }
  }
}