About: http://webisa.webdatacommons.org/5388623

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	So mass is a relatively simple thing because there is only one kind of it.
http://www.w3.org/ns/prov#wasQuotedFrom	askthephysicist.com