About: http://webisa.webdatacommons.org/298296982

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	Hence, by first testing whether an instance is solvable or not, we can avoid starting to generate prefixes of invalid plans.
http://www.w3.org/ns/prov#wasQuotedFrom	liu.se