About: http://webisa.webdatacommons.org/250268171

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 black hole is an object which has an escape velocity greater than the speed of light.
http://www.w3.org/ns/prov#wasQuotedFrom	freerepublic.com