Premise: a group of people sitting on the side of a huge grassy mountain.

Hypothesis: A group of people on the side of a mountain.
yes

Premise: Three little girls are sitting on the grass.

Hypothesis: there is three men
no

Premise: A hostess in a restaurant, wearing a uniform and a black hat is cleaning one of the tables.

Hypothesis: A hostess at Applebee's cleans a brown wooden table with a cloth.
it is not possible to tell

Premise: A woman in a colorful sweater is playing with a toddler and a lego-built structure that includes a crane, a helicopter that says "harold" on the side and a train with train tracks.

Hypothesis: A woman and child are at the swimming pool.
no