An "ask at order" response using the datetime datetype for the result value

@prefix fhir: <http://hl7.org/fhir/> .
@prefix loinc: <http://loinc.org/rdf#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

# - resource -------------------------------------------------------------------

[a fhir:Observation;
  fhir:nodeRole fhir:treeRoot;
  fhir:Resource.id [ fhir:value "date-lastmp"]; # 
  fhir:DomainResource.text [
     fhir:Narrative.status [ fhir:value "generated" ];
     fhir:Narrative.div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: Observation</b><a name=\"date-lastmp\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource Observation &quot;date-lastmp&quot; </p></div><p><b>status</b>: final</p><p><b>category</b>: AOE <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/4.0.0/CodeSystem-observation-category.html\">Observation Category Codes</a>#survey &quot;Survey&quot;)</span></p><p><b>code</b>: Date last menstrual period <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://loinc.org/\">LOINC</a>#8665-2)</span></p><p><b>subject</b>: <a href=\"patient-example-b.html\">Patient/pat2</a> &quot;Duck DONALD&quot;</p><p><b>effective</b>: 2016-01-24</p><p><b>value</b>: 2016-12-30</p></div>"
  ]; # 
  fhir:Observation.status [ fhir:value "final"]; # 
  fhir:Observation.category [
     fhir:index 0;
     fhir:CodeableConcept.coding [
       fhir:index 0;
       fhir:Coding.system [ fhir:value "http://terminology.hl7.org/CodeSystem/observation-category" ];
       fhir:Coding.code [ fhir:value "survey" ];
       fhir:Coding.display [ fhir:value "Survey" ]
     ];
     fhir:CodeableConcept.text [ fhir:value "AOE" ]
  ]; # 
  fhir:Observation.code [
     fhir:CodeableConcept.coding [
       fhir:index 0;
       a loinc:8665-2;
       fhir:Coding.system [ fhir:value "http://loinc.org" ];
       fhir:Coding.code [ fhir:value "8665-2" ];
       fhir:Coding.display [ fhir:value "Date last menstrual period" ]
     ];
     fhir:CodeableConcept.text [ fhir:value "Date last menstrual period" ]
  ]; # 
  fhir:Observation.subject [
     fhir:Reference.reference [ fhir:value "Patient/pat2" ]
  ]; # 
  fhir:Observation.effectiveDateTime [ fhir:value "2016-01-24"^^xsd:date]; # 
  fhir:Observation.valueDateTime [ fhir:value "2016-12-30"^^xsd:date]] . # 

# - ontology header ------------------------------------------------------------

[a owl:Ontology;
  owl:imports fhir:fhir.ttl] .

# -------------------------------------------------------------------------------------