{
  "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":"http://a.example/o1"}
    ]
  },
  "startActs": [
    { "type": "SemAct", "name": "http://shex.io/extensions/Test/", "code": " print(\"startAct\") " }
  ]
}