About: http://webisa.webdatacommons.org/314093520

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	But physicists are not troubled about questioning whether such concepts as force are real, so long as they are precisely defined, measurable and demonstrably useful concepts.
http://www.w3.org/ns/prov#wasQuotedFrom	lhup.edu