About: http://webisa.webdatacommons.org/232483535

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	PCBs were widely used before 1979 as dielectric fluid to insulate electrical equipment such as capacitors, transformers, switches, and voltage regulators, and for fluorescent lamp ballasts.
http://www.w3.org/ns/prov#wasQuotedFrom	peakstoprairies.org