About: http://webisa.webdatacommons.org/369378120

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	Ventilate low lying areas such as sumps or pits where dense dust may collect.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com