Premise: A man in camouflage on the beach looks through a telescope at night.

Hypothesis: A man in camouflage on the beach looks through a telescope at night on a full moon and during a meteor shower.
it is not possible to tell

Premise: A man is rope-swinging off a tree into a lake.

Hypothesis: a man is swinging
yes

Premise: Several people are on a stage by a microphone; one is lying on the floor while others are standing around with their hands out to their sides.

Hypothesis: A bunch of people are dancing to music.
no

Premise: Young boy cutting wood with an ax while older man watches.

Hypothesis: The young boy is watching an older man chop wood with a chainsaw.
no