About: http://webisa.webdatacommons.org/448818010

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	(ii) the materials or substances in the confined space, including the materials
http://www.w3.org/ns/prov#wasQuotedFrom	olelearning.com