About: http://webisa.webdatacommons.org/139659997

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	A WWF study shows that only 64 of the world???s 177 large rivers (1,000km and longer) remain free-flowing, unimpeded by dams or other barriers, whilst only 21 rivers longer than 1,000 km retain a direct connection with the sea.
http://www.w3.org/ns/prov#wasQuotedFrom	panda.org