About: http://webisa.webdatacommons.org/83799349

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	<para>A ray is a direction and a position; it represents a line extending from the position
http://www.w3.org/ns/prov#wasQuotedFrom	bitbucket.org