About: http://webisa.webdatacommons.org/251930579

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	The project took over 20 years to complete and is the largest effort of its kind in the world.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org