About: http://webisa.webdatacommons.org/324461960

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	In the late nineteenth century it seemed clear that light was an electromagnetic wave.
http://www.w3.org/ns/prov#wasQuotedFrom	bbc.co.uk