Assertion: sea's basin | /r/CapableOf | reach a depth of 1,300 feet
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Source sentences:
text: The Tongue”) divided the lake on its eastern side into two unequal basins: the northern basin encompassed about three-fourths of the lake’s total surface area and reached a depth of 1,300 feet (400 metres), and the southern basin was smaller and considerably shallower, less than 10 feet (3 metres) deep on average.