Premise: The person is going into the water.

Hypothesis: A person is getting wet.
yes

Premise: A group of guys in a marathon bicycle race with the crowd cheering them on

Hypothesis: A group of men are running in a race.
no

Premise: Two girls and a guy taking pictures with their cellphones.

Hypothesis: two girls and guy are playing with their phones
it is not possible to tell

Premise: Two men are standing under what looks to be a giant robot.

Hypothesis: There seems to be a giant robot over the two men.
yes