About: http://webisa.webdatacommons.org/80959427

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	To put them in a bit of context, the photoelectric effect was discovered as a sort of by-product of Heinrich Hertz???s experiments to demonstrate that light was an electromagnetic wave.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceblogs.com