About: http://webisa.webdatacommons.org/284998779

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	I think an answer to this question could help for solving your problem. (For instance, if this ring is a field, then there is no such $f\neq 0$.)
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com