About: http://webisa.webdatacommons.org/432625048

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	Such problems are known as NP-hard problems (French 1982, Cleveland and Smith 1989), which cannot be solved by deterministic methods within polynomial time.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com