Assertion: elephant's ancestor | /r/CapableOf | begin evolving toward smaller sizes
Facets:
value: in response to limited natural resources
type: CAUSE
Source sentences:
text: As soon as the first full-sized prehistoric elephants arrived on, let's say, the small island of Sardinia, their ancestors began evolving toward smaller sizes in response to limited natural resources (a colony of full-sized elephants eats thousands of pounds of food every day, much less so if the individuals are only one-tenth the size).