About: http://webisa.webdatacommons.org/76665623

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	Other methods used in the past to shield humans from airborne contaminants have included the use of gas curtains and physical barriers such as surgical garments and masks.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com