About: http://webisa.webdatacommons.org/210106602

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	Standard gas masks must be manufactured in many different sizes because the structure of the nose and mouth area varies widely in populations including children and adults.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com