Assertion: arctic tern | /r/CapableOf | migrate about 1.5 million miles
Facets:
value: to three trips to the moon
type: TRANSITIVE-OBJECT
value: over its lifetime
type: TEMPORAL
Source sentences:
text: Since the birds often live 30 years or more, the researchers estimate that, over its lifetime, an arctic tern migrates about 1.5 million miles (2.4 million kilometers)—equal to three trips to the moon and back.