Assertion: comet | /r/HasProperty | object
Facets:
Source sentences:
text: A comet is an object that travels around the sun leaving a bright trail behind it.
text: ER 61 (PANSTARRS) is a comet, inner Oort cloud object, Amor near-Earth asteroid, and possibly a damocloid.
text: Comets are objects made up of rock and ices - and can be anything from the size of mountains to as big as the Isle of Wight.