Premise: Two men are trying to push this very large inflatable golf ball

Hypothesis: two younger men pushing a large golf ball
it is not possible to tell

Premise: An orchestra of about 30 people are practicing on the stage of what appears to be an auditorium full of green chairs.

Hypothesis: A group of people are playing music.
yes

Premise: Woman in black, red and white dress waving a gold cape

Hypothesis: A woman is waving a cape to start a race.
it is not possible to tell

Premise: a skinny woman spikes a volleyball over the net.

Hypothesis: The woman scores the winning point in the game.
it is not possible to tell