{
  "type": "Schema",
  "shapes": [
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#Observation",
      "shapeExpr": {
        "type": "Shape",
        "closed": true,
        "expression": {
          "type": "EachOf",
          "expressions": [
            {
              "type": "TripleConstraint",
              "predicate": "http://hl7.org/ns/fhir#code",
              "min": 0,
              "max": 1
            },
            {
              "type": "TripleConstraint",
              "predicate": "http://hl7.org/ns/fhir#component",
              "valueExpr": {
                "type": "Shape",
                "closed": true,
                "expression": {
                  "type": "EachOf",
                  "expressions": [
                    {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#code"
                    },
                    {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#value"
                    }
                  ]
                }
              },
              "min": 0,
              "max": -1
            }
          ]
        }
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#Vital",
      "abstract": true,
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#Observation"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#PostureVital",
      "abstract": true,
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#Vital",
          "http://a.example/#Posture"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#ReclinedVital",
      "abstract": true,
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#PostureVital",
          "http://a.example/#Reclined"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#BP",
      "shapeExpr": {
        "type": "ShapeAnd",
        "shapeExprs": [
          {
            "type": "Shape",
            "extends": [
              "http://a.example/#Vital"
            ],
            "closed": true
          },
          {
            "type": "Shape",
            "closed": true,
            "expression": {
              "type": "EachOf",
              "expressions": [
                {
                  "type": "TripleConstraint",
                  "predicate": "http://hl7.org/ns/fhir#component",
                  "valueExpr": {
                    "type": "Shape",
                    "expression": {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#code",
                      "valueExpr": {
                        "type": "NodeConstraint",
                        "values": [
                          {
                            "value": "systolic"
                          }
                        ]
                      }
                    }
                  }
                },
                {
                  "type": "TripleConstraint",
                  "predicate": "http://hl7.org/ns/fhir#component",
                  "valueExpr": {
                    "type": "Shape",
                    "expression": {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#code",
                      "valueExpr": {
                        "type": "NodeConstraint",
                        "values": [
                          {
                            "value": "diastolic"
                          }
                        ]
                      }
                    }
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#PostureBP",
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#BP",
          "http://a.example/#PostureVital"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#ReclinedBP",
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#BP",
          "http://a.example/#ReclinedVital"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#Pulse",
      "shapeExpr": {
        "type": "ShapeAnd",
        "shapeExprs": [
          {
            "type": "Shape",
            "extends": [
              "http://a.example/#Vital"
            ],
            "closed": true
          },
          {
            "type": "Shape",
            "expression": {
              "type": "TripleConstraint",
              "predicate": "http://hl7.org/ns/fhir#code",
              "valueExpr": {
                "type": "NodeConstraint",
                "values": [
                  {
                    "value": "pulse"
                  }
                ]
              }
            }
          }
        ]
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#PosturePulse",
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#Pulse",
          "http://a.example/#PostureVital"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#ReclinedPulse",
      "shapeExpr": {
        "type": "Shape",
        "extends": [
          "http://a.example/#Pulse",
          "http://a.example/#ReclinedVital"
        ],
        "closed": true
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#Posture",
      "shapeExpr": {
        "type": "Shape",
        "expression": {
          "type": "TripleConstraint",
          "predicate": "http://hl7.org/ns/fhir#component",
          "valueExpr": {
            "type": "Shape",
            "expression": {
              "type": "TripleConstraint",
              "predicate": "http://hl7.org/ns/fhir#code",
              "valueExpr": {
                "type": "NodeConstraint",
                "values": [
                  {
                    "value": "posture"
                  }
                ]
              }
            }
          }
        }
      }
    },
    {
      "type": "ShapeDecl",
      "id": "http://a.example/#Reclined",
      "shapeExpr": {
        "type": "ShapeAnd",
        "shapeExprs": [
          {
            "type": "Shape",
            "extends": [
              "http://a.example/#Posture"
            ],
            "closed": true
          },
          {
            "type": "Shape",
            "expression": {
              "type": "TripleConstraint",
              "predicate": "http://hl7.org/ns/fhir#component",
              "valueExpr": {
                "type": "Shape",
                "closed": true,
                "expression": {
                  "type": "EachOf",
                  "expressions": [
                    {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#code",
                      "valueExpr": {
                        "type": "NodeConstraint",
                        "values": [
                          {
                            "value": "posture"
                          }
                        ]
                      }
                    },
                    {
                      "type": "TripleConstraint",
                      "predicate": "http://hl7.org/ns/fhir#value",
                      "valueExpr": {
                        "type": "NodeConstraint",
                        "values": [
                          {
                            "value": "reclined"
                          }
                        ]
                      }
                    }
                  ]
                }
              }
            }
          }
        ]
      }
    }
  ],
  "@context": "http://www.w3.org/ns/shex.jsonld"
}