About: http://webisa.webdatacommons.org/328313178

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	You check for duplicated values using something similar to the answers received in your question yesterday, then also check that the value is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com