About: http://webisa.webdatacommons.org/247309049

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	Duration types provide comparison and arithmetic operations on those values.
http://www.w3.org/ns/prov#wasQuotedFrom	open-std.org