Premise: A girl in a brown shirt talks on her phone while a girl and guy play guitar.

Hypothesis: Two people are playing music
yes

Premise: A room full of adults and children.

Hypothesis: People gather for a performance.
it is not possible to tell

Premise: Two women stand in front of a herd of goats.

Hypothesis: These people are watching the animals
yes

Premise: There are two guys in karate attire, one is kicking in the air.

Hypothesis: One guy practices kicking while the other prepares.
yes