Assertion: narwhal | /r/AtLocation | coastal summering areas
Facets:
value: into early winter season
type: TEMPORAL
value: on these occasions
type: TEMPORAL
value: into the fall
type: TEMPORAL
Source sentences:
text: On these occasions narwhals remained in coastal summering areas until well into the fall and early winter season, delaying their annual offshore migration and becoming lethally entrapped by rapidly forming fast ice.