About: http://webisa.webdatacommons.org/321385795

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	then pi is desarguesian ; so S is a skew-field;and therefore there is no problem to solve in this case since the solution is well known.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net