Assertion: mercury | /r/ObjectUse | used in light switches
Facets:
value: in the past
type: TEMPORAL
value: commonly
type: TEMPORAL
Source sentences:
text: It was commonly used in batteries, paints, explosives, light bulbs, light switches, pharmaceuticals, fungicides, and pesticides.
text: In the past it has been used for gold and silver mining, light switches, batteries, in barometers and other scientific equipment, preserving wood for making hats and in many other industries.