About: http://webisa.webdatacommons.org/137851401

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	They protect the lens from scratches when they are stored in the carrier, and they protect the lens from chemical agent droplets, oil, and other petroleum products when the mask is worn.
http://www.w3.org/ns/prov#wasQuotedFrom	idsi.com