About: http://webisa.webdatacommons.org/142010633

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	Electromagnetic radiation is similar, except the waves travel at the speed of light, and do not require a medium like air molecules.
http://www.w3.org/ns/prov#wasQuotedFrom	skeptoid.com