Assertion: benzene's use | /r/CapableOf | continue with few restraints
Facets:
value: until the 1970s
type: TEMPORAL
Source sentences:
text: Through the 1960s Monsanto Chemical Company knew increasingly more about PCBs' harmful effects on humans and the environment, per internal leaked documents released in 2002, yet PCB manufacture and use continued with few restraints until the 1970s.