Assertion: volcano | /r/HasProperty | mountain
Facets:
Source sentences:
text: A volcano is a mountain where lava (hot, liquid rock) comes from a magma chamber under the ground.
text: A volcano is also a mountain formed by the accumulation of these eruptive products.
text: A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth.
text: Volcanoes are mountains formed by magma (molten rock) emerging from cracks in the Earth’s thin outer crust.