Premise: One person kayaks as another kayer sinks their boat.

Hypothesis: Two people Kayaking while one sinks
yes

Premise: A brown and white dog walks down a ramp toward a pool of water in which a green tennis ball floats.

Hypothesis: Two dogs are scared of the tennis ball.
no

Premise: Several speed boats are racing with people dressed in red aboard them.

Hypothesis: Some boats are on the water.
yes

Premise: A big dog stands on his hand leg as tennis balls are thrown his direction.

Hypothesis: A big dog is standing
yes