Assertion: magma's gas | /r/CapableOf | move at high speed
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Pyroclastic flow, in a volcanic eruption, a fluidized mixture of hot rock fragments, hot gases, and entrapped air that moves at high speed in thick, gray-to-black, turbulent clouds that hug the ground.
text: Pyroclastic surge: A turbulent, low-density cloud of hot rock debris and gases that moves at extremely high speeds.