<https://w3id.org/zericatalog/date/sd> <http://www.w3.org/2000/01/rdf-schema#label> "S.d." .
<https://w3id.org/zericatalog/date/sd> <http://www.w3.org/2000/01/rdf-schema#label> "s.d." .
<https://w3id.org/zericatalog/date/sd> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.cidoc-crm.org/cidoc-crm/E52_Time-Span> .