Assertion: trumpeter swan | /r/CapableOf | eat their parents
Facets:
value: by 2
type: OTHER
value: mostly
type: DEGREE
Source sentences:
text: Swan young, known as cygnets, grow more than a pound a week and mostly eat aquatic invertebrates for their first 3 weeks, but by 2 -3 months they eat mostly aquatic vegetation like their parents.