Assertion: autumnal equinox | /r/HasProperty | the start of fall
Facets:
value: astronomically
type: DEGREE
value: by most
type: OTHER
Source sentences:
text: The autumnal equinox, the start of fall, will officially arrive at 10:21 a.m. EDT on Thursday.
text: The autumnal equinox, which occurs on September 22, is considered by most to be the start of autumn.
text: Astronomically, the September equinox is the autumnal, or fall, equinox marking the end of summer and the beginning of fall (autumn).