About: http://webisa.webdatacommons.org/339883950

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	Formerly, toxic materials such as beryllium, arsenic, cadmium, and thallium were used in phosphor manufacture.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org