Premise: A man skateboarding outside balancing his skateboard on a beam.

Hypothesis: The skateboarder is tempting fate.
it is not possible to tell

Premise: A small child, wearing a helmet, is riding a BMX bike on a dirt path.

Hypothesis: child riding a bike, wearing a helmet
yes

Premise: A man mowing a lawn at a commercial property.

Hypothesis: A man is sitting with a glass of lemonade in his hand.
no

Premise: Two guys and one girl are sitting at a table in a bar drinking beer.

Hypothesis: The people are on a date.
it is not possible to tell