Test for natural language inference.\nPremise: "A man on a white waterskiing ramp on a lake."\nHypothesis: "A man is at a lake."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell
A step-by-step solution is:
yes
Being on a ramp on a lake requires being at a lake.

.

The answer is yes