About: http://webisa.webdatacommons.org/18992114

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	If you want to explain a theory, especially in the field of physics, ????????? is the only choice.
http://www.w3.org/ns/prov#wasQuotedFrom	italki.com