About: http://webisa.webdatacommons.org/46226428

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	Various metals (most notably iron and lead) were melted during the WTC Event, producing spherical metallic particles.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com