About: http://webisa.webdatacommons.org/277581291

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	entity(c1, [prov:type='prov:Collection' ]) // c1 is a collection, with unknown content
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org