Premise: A skydiver hangs from the undercarriage of an airplane or some sort of air gliding device.

Hypothesis: The skydiver is afraid
it is not possible to tell

Premise: a skier jumping and having fun on the snow

Hypothesis: There is a skier outside.
yes

Premise: Four people are standing in front of a van and are doing construction.

Hypothesis: Four people are sitting during lunch.
no

Premise: A man with a guitar playing in front of a group of girls wearing hats.

Hypothesis: a man plays a guitar
yes