About: http://webisa.webdatacommons.org/218386882

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 horizon is a boundary defined by light-like geodesics; it is those light rays that are just barely unable to escape.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org