About: http://webisa.webdatacommons.org/411965356

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	The acoustic window 20 is glass, plastic, polymer, rubber, or other acoustically transparent material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com