About: http://webisa.webdatacommons.org/16734877

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	In geometry, an object such as a line or vector is called a normal to another object if they are orthogonal to each other. learn more???
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com