About: http://webisa.webdatacommons.org/221708808

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	Converging rays are such as approach and tend to unite at any one point, as at b. fig. 3.
http://www.w3.org/ns/prov#wasQuotedFrom	oldandsold.com