Assertion: comet | /r/CapableOf | form below minus 420 degrees
Facets:
value: very rich in co ice
type: OTHER
value: from material
type: OTHER
Source sentences:
text: The comet must have formed from material very rich in CO ice, which is only present at the lowest temperatures found in space, below minus 420 degrees Fahrenheit (minus 250 degrees Celsius)," Milam said in the same statement.