About: http://webisa.webdatacommons.org/454036993

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 matter, such as air, glass, or water, the speed of light is always less than what it is in a vacuum.
http://www.w3.org/ns/prov#wasQuotedFrom	answersingenesis.org