About: http://webisa.webdatacommons.org/64253200

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	Einstein's Theory of Relativity observed: When experiments showed light was a wave, like sound, there was a question of what medium it propagated through.
http://www.w3.org/ns/prov#wasQuotedFrom	jimdo.com