About: http://webisa.webdatacommons.org/450539537

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	Laser media commonly include gases such as argon, carbon dioxide, nitrogen or a helium and neon mixture, solid crystals such as ruby, and liquid dyes or chemicals.
http://www.w3.org/ns/prov#wasQuotedFrom	science20.com