About: http://webisa.webdatacommons.org/389863006

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	I am not sure what is the formal procedure - I only know that it involves proving that the couple is indeed a couple, such as showing photos together, testimonies of common friends, proof that the two live together etc.
http://www.w3.org/ns/prov#wasQuotedFrom	expat-blog.com