Premise: A fireman is lifting up a red item designed to block off an area.

Hypothesis: A fireman is preventing people from accessing a potential hazard.
it is not possible to tell

Premise: a man sings into a microphone on stage.

Hypothesis: A person sings into a microphone on stage.
yes

Premise: Two station wagons unloading cargo in third world village.

Hypothesis: A group of people pile supplies int a car.
no

Premise: A woman walking with a balding man points ahead.

Hypothesis: A policeman writes a ticket.
no