Assertion: giraffe's column | /r/CapableOf | migrate across river
Facets:
value: after spending three weeks
type: TEMPORAL
value: to the north
type: LOCATION
Source sentences:
text: Sometimes they are seen in 40 square kilometres (15 sq mi) long columns migrating across the rivers to the north, over a distance of 1,000 square kilometres (390 sq mi), after spending three weeks of mating and giving birth to 8000 calves daily.