About: http://webisa.webdatacommons.org/168226566

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	it is tail is at 0,0 and it is head is a point he is exactly one unit away.
http://www.w3.org/ns/prov#wasQuotedFrom	dreamincode.net