Assertion: helicopter's blade | /r/CapableOf | spin at close to 3,000 revolutions
Facets:
value: a minute
type: TEMPORAL
Source sentences:
text: Given that the Martian atmosphere is 100 times thinner than that of Earth's, its two blades will spin at close to 3,000 revolutions a minute, approximately 10 times faster than that of a terrestrial helicopter.