About: http://webisa.webdatacommons.org/242528228

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	On top of the basic math functions such as addition and subtraction, there are many more math functions that will be useful for us that are already built into Cocos2D. For a full list of the built in math functions, you can go here.
http://www.w3.org/ns/prov#wasQuotedFrom	tutsplus.com