About: http://webisa.webdatacommons.org/17160095

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	Birds, insects and frogs commonly sing during courtship but until now, the only mammals known to croon have been people, bats and cetaceans such as whales and dolphins.
http://www.w3.org/ns/prov#wasQuotedFrom	animalliberationfront.com