[Q] Given the sentence "Four people standing near a wall at night." is it true that "People stand by a wall while the moon is in the sky."?
[A] The moon is in the sky so that means it is night.
The answer is yes.

[Q] Given the sentence "A guy with green shirt taking care of a tomato plant." is it true that "A man is watering his plant."?
[A] Guy is synonym for man. Watering is a form of taking care of something. Tomato plant is a specific kind of plant.
The answer is yes.

[Q] Premise: "A young woman wearing a dress makes an awkward hand sign."
Hypothesis: "A young woman is throwing up gang signs as she drives through the ghetto."
Do we know that the hypothesis entailed by the premise?
[A] A woman throwing up gang signs knows what she is doing with her hands and can't be said to be making awkward hand signs.
The answer is no.