@prefix this: . @prefix sub: . @prefix latest: . @prefix nt: . @prefix rdfs: . @prefix xsd: . @prefix dct: . @prefix np: . @prefix npx: . @prefix orcid: . @prefix skos: . sub:Head { this: np:hasAssertion sub:assertion; np:hasProvenance sub:provenance; np:hasPublicationInfo sub:pubinfo; a np:Nanopublication . } sub:assertion { nt:OptionalStatement rdfs:isDefinedBy latest:; rdfs:label "Optional Statement"@en; rdfs:subClassOf nt:TemplateStatement; skos:definition "A statement that is optional."@en . } sub:provenance { sub:assertion dct:creator orcid:0000-0002-1267-0234 . } sub:pubinfo { this: dct:created "2021-01-05T13:19:31.524+01:00"^^xsd:dateTime; dct:creator orcid:0000-0002-1267-0234; dct:license ; npx:introduces nt:OptionalStatement . }