About: http://webisa.webdatacommons.org/372236927

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	You can not use elimination here because terms such as ua and va will not cancel out.The only method I am aware of is substitution, though it seems to spill onto multiple pages (the above system is simpler than what I need to solve).
http://www.w3.org/ns/prov#wasQuotedFrom	purplemath.com