Assertion: volcano | /r/HasProperty | vent
Facets:
value: in the ground
type: LOCATION
value: in the planet's crust
type: LOCATION
Source sentences:
text: A volcano on Earth is a vent or fissure in the planet's crust through which lava, ash, rock and gases erupt.
text: Volcano is a vent in the crust of a planetary-mass object, such as Earth, that allows material warmer than its surroundings to escape from its interior.
text: Volcanoes are vents in the ground where magma from inside the Earth forces its way to the surface and escapes in an eruption.