Assertion: volcano's surface | /r/HasProperty | fractured
Facets:
value: continually
type: TEMPORAL
value: by escaping gases
type: CAUSE
Source sentences:
text: Lava fountains reached heights of up to 150 m. Lava was visible in the vent for about a minute after each eruption, with the surface continually being fractured by escaping gases.
text: The surface of the Earth is known as the crust.