Assertion: vernal equinox | /r/AtLocation | the spring
Facets:
value: in the northern hemisphere
type: LOCATION
value: around march 21st
type: TEMPORAL
Source sentences:
text: In the spring in the Northern Hemisphere, the vernal equinox occurs around March 21st, and in the fall the autumnal equinox happens around September 21st (although the specific dates vary slightly from year to year.)