Assertion: elephant seal's pup | /r/CapableOf | perfect their swimming
Facets:
Source sentences:
text: For the next two months, weaned pups, called "weaners," remain on rookery beaches, venturing into the water for short periods of time, perfecting their swimming and feeding abilities.
text: For the next two months, weaned pups, called "weaners " ," remain on rookery beaches, venturing into the water for short periods of time, perfecting their swimming and feeding abilities.