Assertion: rat's male | /r/CapableOf | form loose male social groups
Facets:
value: often
type: TEMPORAL
value: to maintain their position
type: PURPOSE
value: against other potential invaders
type: TRANSITIVE-OBJECT
Source sentences:
text: Unrelated males often form loose male social groups to maintain their position against foreign males during the mating season—or against other potential invaders.