{
  "@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"
      },
      "annotations": [
        {
          "type": "Annotation",
          "predicate": "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
          "object": "http://a.example/IRIREF"
        }
      ]
    } }
  ]
}