About: http://webisa.webdatacommons.org/147231546

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 friction of the sticks causes heat, and particularly flammable materials can ignite from this with oxygen.So the thing that caused the heat on the physical level was friction.Friction is what exactly?
http://www.w3.org/ns/prov#wasQuotedFrom	godlikeproductions.com