PREFIX fhir: <http://hl7.org/fhir-rdf/>
PREFIX sct: <http://snomed.info/sct/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX bp: <http://shexspec.github.io/extensions/Map/#BPDAM->
PREFIX Map: <http://shexspec.github.io/extensions/Map/#>

start = <BPfhir>

<BPfhir> {
    a (fhir:Observation)?,
    fhir:coding { fhir:code (sct:Blood_Pressure) },
    fhir:related { fhir:type ("has-component"), fhir:target @<sysBP> },
    fhir:related { fhir:type ("has-component"), fhir:target @<diaBP> }
}
<sysBP> {
    a (fhir:Observation)?,
    fhir:coding { fhir:code (sct:Systolic_Blood_Pressure) },
    fhir:valueQuantity {
        a (fhir:Quantity)?,
        fhir:value xsd:float %Map:{ bp:sysVal %},
        fhir:units xsd:string %Map:{ bp:sysUnits %}
    },
}
<diaBP> {
    a (fhir:Observation)?,
    fhir:coding { fhir:code (sct:Diastolic_Blood_Pressure) },
    fhir:valueQuantity {
        a (fhir:Quantity)?,
        fhir:value xsd:float,
        fhir:units xsd:string
    },
}