Acetaminophin product, pack and tablet (using contained resources)

@prefix fhir: <http://hl7.org/fhir/> .
@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:MedicinalProductDefinition ;
  fhir:nodeRole fhir:treeRoot ;
  fhir:id [ fhir:v "Acetamin-500-20-generic"] ; # 
  fhir:contained ( [
     a fhir:PackagedProductDefinition ;
     fhir:id [ fhir:v "Acetamin-pack-20" ] ;
     fhir:packageFor ( [
       fhir:reference [ fhir:v "#" ]
     ] ) ;
     fhir:packaging [
       fhir:type [
         fhir:coding ( [
           fhir:code [ fhir:v "cardboard box" ]
         ] )
       ] ;
       fhir:containedItem ( [
         fhir:item [
           fhir:reference [
             fhir:reference [ fhir:v "#Acetamin-tab-500" ]
           ]
         ] ;
         fhir:amount [
           fhir:value [ fhir:v "20"^^xsd:decimal ]
         ]
       ] ) #   the item contained in the pack (note this is a different concept to a \"contained\" resource, above)  
     ]
  ] [
     a fhir:ManufacturedItemDefinition ;
     fhir:id [ fhir:v "Acetamin-tab-500" ] ;
     fhir:status [ fhir:v "active" ] ;
     fhir:manufacturedDoseForm [
       fhir:coding ( [
         fhir:code [ fhir:v "tablet" ]
       ] )
     ]
  ] ) ; # 
  fhir:identifier ( [
     fhir:system [ fhir:v "http://example.nation.org/drugs"^^xsd:anyURI ] ;
     fhir:value [ fhir:v "12345" ]
  ] ) ; #  contained>
#		<Ingredient>
#			<id value="Acetamin-ing-500"/>
#			<status value="active"/>
#			<for>
#				<reference value="ManufacturedItemDefinition/Acetamin-tab-500"/>
#			</for>
#			<role>
#				<coding>
#					<code value="active"/>
#				</coding>
#			</role>
#			<substance>
#				<code>
#					<concept>
#					<coding>
#						<system value="http://snomed.info/sct"/>
#						<code value="387517004"/>
#						<display value="Acetaminophen"/>
#					</coding>
#					</concept>
#				</code>
#				<strength>
#					<presentationRatio>
#						<numerator>
#							<value value="500"/>
#							<unit value="mg"/>
#						</numerator>
#						<denominator>
#							<value value="1"/>
#							<unit value="tablet"/>
#						</denominator>
#					</presentationRatio>
#				</strength>
#			</substance>
#		</Ingredient>
#	</contained 
  fhir:name ( [
     fhir:productName [ fhir:v "Acetaminophen 500 mg tablets [generic]" ]
  ] )] . # 

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