{ "@context": "http://www.w3.org/ns/shex.jsonld",
  "type": "Schema",
  "shapes": [
    { "type": "ShapeDecl",
    "id": "http://a.example/S1",
    "shapeExpr": {
      "type": "ShapeOr",
      "shapeExprs": [
        { "type": "ShapeAnd",
          "shapeExprs": [
            { "type": "NodeConstraint", "nodeKind": "bnode" },
            { "type": "Shape" }
          ] },
        { "type": "ShapeAnd",
          "shapeExprs": [
            { "type": "NodeConstraint",
              "pattern": "^http://a.example/s1$" },
            { "type": "Shape" }
          ] }
      ] } }
  ] }