About: http://webisa.webdatacommons.org/281630364

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	There are a lot of ways for that to happen including simple contact or exposure when other materials are being used in manufacturing.
http://www.w3.org/ns/prov#wasQuotedFrom	unexplained-mysteries.com