Assertion: comet | /r/HasProperty | infrequent
Facets:
value: fairly
type: DEGREE
Source sentences:
text: Comets visible to the naked eye are fairly infrequent, but comets that put on fine displays in amateur class telescopes (50 mm to 100 cm) occur fairly often—as often as several times a year, occasionally with more than one in the sky at the same time.