About: http://webisa.webdatacommons.org/207101532

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	Some information is lost, e.g. C in the first equation can not be 0, but in the final step there is nothing about restriction on C!
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com