Assertion: narwhal | /r/CapableOf | form groups of up to 1,000
Facets:
value: sometimes
type: TEMPORAL
value: during their migration
type: TEMPORAL
Source sentences:
text: While usually seen in groups of 20-30 animals, sometimes narwhals form groups of up to 1,000 during their migration.
text: While usually seen in groups of 20-30 animals, sometimes narwhals form groups of up to 1,000 during their migration within the Arctic Ocean.