About: http://webisa.webdatacommons.org/288149746

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 4 corners is a good idea but, it has the possibility of "skipping over the collision if the velocity is right.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com