Assertion: raven | /r/CapableOf | travel in pair
Facets:
value: usually
type: DEGREE
value: often
type: TEMPORAL
Source sentences:
text: They often travel in pairs, whereas crows are seen in larger groups.
text: Ravens are solitary birds which feed and move in pairs or small flocks.
text: Well, ravens are typically larger and usually travel in pairs, whereas crows are often seen in larger groups.