Premise: A person in a brown shirt is pushing a baby in a stroller by the sea.

Hypothesis: A person in a brown shirt is pushing a baby.
yes

Premise: A female performer with a violin plays on a street while a woman with a blue guitar looks on.

Hypothesis: A woman with a guitar studies her teacher as she plays the violin
it is not possible to tell

Premise: A man about to hit a tennis ball with a racket.

Hypothesis: A man is playing tennis with his friend.
it is not possible to tell

Premise: Four children in uniforms stand in front of palm trees.

Hypothesis: Four children are in uniforms.
yes