About: http://webisa.webdatacommons.org/360140692

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	Anything that does not satisfy one of those conditions, is a list of at least two items - hence you can take the first (car xs) and the second (cadr xs) and do stuff to them.
http://www.w3.org/ns/prov#wasQuotedFrom	dreamincode.net