{ "@context": "http://www.w3.org/ns/shex.jsonld", "type": "Schema", "shapes": [ { "type": "ShapeDecl", "id": "http://a.example/S1", "shapeExpr": { "type": "Shape", "expression": { "type": "TripleConstraint", "predicate": "http://a.example/p1" }, "semActs": [ { "type": "SemAct", "name": "http://shex.io/extensions/Test/" } ] } } ] }