Premise: A middle-aged guy wearing a baseball cap, black shirt and black pants is using a power tool on a rooftop.

Hypothesis: A man holding a ladder.
no

Premise: a black and white dog is running though water whilst bearing its teeth.

Hypothesis: The dog is brown.
no

Premise: two dogs play tug-of-war for a red toy.

Hypothesis: Two dogs are trying to exert dominance
it is not possible to tell

Premise: Four people in a restaurant with a couple of beers surrounding them.

Hypothesis: A couple share a bottle a wine in the restaurant.
no