Assertion: cardinal | /r/CapableOf | become aggressive
Facets:
value: very
type: DEGREE
value: for a period in spring
type: TEMPORAL
Source sentences:
text: Cardinals have been nicknamed the “Angry Bird” because they have been known to become very aggressive, especially if someone or something is in their territory.
text: For a period in spring, they become extremely aggressive, so much so that they will attack their own reflections in a window or mirror and continue the fight for hours.