Assertion: magma's temperature | /r/CapableOf | drop by 10 degrees
Facets:
value: within 18 months
type: TEMPORAL
Source sentences:
text: A simulation conducted on what happened during the last time Yellowstone erupted, some 640,000 years ago, showed that in one month’s time, the cloud of fine ash and dust covered the entire Northern Hemisphere and within 18 months the average worldwide temperature dropped by 10 degrees C.