About: http://webisa.webdatacommons.org/451355735

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	In the presence of uncleaned or improperly prepared equipment, drums, tanks, or other containers that have previously contained flammable materials that could develop explosive atmospheres.
http://www.w3.org/ns/prov#wasQuotedFrom	powershow.com