About: http://webisa.webdatacommons.org/143027711

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Instinctively, even in such cases, I am thinking of two people, so I expect a plural.However, other examples such as My family is very old (We can trace our ancestry back to William the Conqueror) work.
http://www.w3.org/ns/prov#wasQuotedFrom	painintheenglish.com