Assertion: asteroid belt's asteroid | /r/HasProperty | silicate
Facets:
Source sentences:
text: Those nearest to the Sun are made of carbon, with traces of oxygen, hydrogen, and nitrogen, while asteroids further from the Sun are composed of silicates.
text: The European spacecraft Rosetta, on its way to study a comet in 2014, flies by and photographs asteroid Steins, a type of asteroid composed of silicates and basalts.