About: http://webisa.webdatacommons.org/227143765

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	Even though steel may be contaminated after years of service containing certain chemicals, such contamination is not as pervasive a problem as it is with concrete that is saturated with a contaminant.
http://www.w3.org/ns/prov#wasQuotedFrom	niir.org