About: http://webisa.webdatacommons.org/192341452

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	Some measurements of the speed of light will show that its speed is always constant relative to the observer and other types of tests will show it is not at all.
http://www.w3.org/ns/prov#wasQuotedFrom	benwiens.com