About: http://webisa.webdatacommons.org/364310181

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	Radiopaque materials include but are not limited to heavy metals such as lead, and insoluble salts of heavy metals such as barium, lead, silver, gold, cadmium, antimony, tin, palladium, strontium, and bismuth.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com