About: http://webisa.webdatacommons.org/268299359

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	Of course, if light is a wave, there must be a medium for light to vibrate.
http://www.w3.org/ns/prov#wasQuotedFrom	teslaphysics.com