{
  "type": "ShapeTest",
  "node": "http://a.example/s1",
  "shape": "http://a.example/S1",
  "solution": { 
    "type":"TripleConstraintSolutions", "predicate":"http://a.example/p1",
    "valueExpr": { "type":"NodeConstraint", "values": [ "http://a.example/o1", "http://a.example/o2" ] },
    "solutions":[
      {"type":"TestedTriple","subject":"http://a.example/s1","predicate":"http://a.example/p1","object":"http://a.example/o1"}
    ]
  }
}