{
  "type": "ShapeTest",
  "node": "http://a.example/s1",
  "shape": "http://a.example/S1",
  "solution":{
    "type": "TripleConstraintSolutions", "predicate": "http://a.example/p1",
    "valueExpr": { "type": "NodeConstraint", "datatype": "http://a.example/dt1" },
    "solutions":[
      {"type":"TestedTriple","subject":"http://a.example/s1","predicate":"http://a.example/p1","object":{ "value": "ab", "type": "http://a.example/dt1" }}
    ]
  }
}