About: http://webisa.webdatacommons.org/238517780

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	Zero sum relationships can also been seen in biology (the food chain) and in games, such as chess and checkers.
http://www.w3.org/ns/prov#wasQuotedFrom	udel.edu