Premise: Colorful musicians playing on a street corner near a church and shopping area.

Hypothesis: The musicians are playing guitars
it is not possible to tell

Premise: The skateboarder is jumping in the air.

Hypothesis: A person is on a skateboard.
yes

Premise: Workers with ropes in the street.

Hypothesis: The workers are in the street.
yes

Premise: Two bikers pose for a picture, one of which is wearing a skull mask.

Hypothesis: Both bikers' faces are visible.
no