Assertion: comet | /r/MadeOf | other ices
Facets:
Source sentences:
text: The assumption that comets contain water and other ices led Dr. Laurence Soderblom of the U.S. Geological Survey to say, "The spectrum suggests that the surface is hot and dry.
text: Asteroids are distinguished from comets by their primarily rocky and metal compositions, while comets contain more ice and dust.
text: The assumption that comets contain water and other ices led Dr. Laurence Soderblom of the U.S. Geological Survey to say, "The spectrum suggests that the surface is hot and dry.