About: http://webisa.webdatacommons.org/199550181

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	A photon has properties such as frequency and intensity and momentum and direction, even when the observer instrument has collapsed the wave function.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com