[Q] Premise: "A young boy in a green shirt and blue cap is kicking a soccer ball."
Hypothesis: "A boy in a green shirt kicks the ball to his brother."
Do we know that the hypothesis entailed by the premise?
[A] The boy might be kicking a ball to anyone not only his brother.
The answer is it is not possible to tell.

[Q] Premise: "A young boy breakdancing."
Hypothesis: "A young boy is in a dancing competition."
Do we know that the hypothesis entailed by the premise?
[A] Because a boy is break dancing doesn't mean he is in a dancing competition.
The answer is it is not possible to tell.

[Q] Premise: "A male jockey riding a horse as it vaults over an obstacle."
Hypothesis: "This jockey is leading the other jockeys."
Do we know that the hypothesis entailed by the premise?
[A] That the male jockey rides a horse doesn't necessarily mean it is leading the other jockeys.
The answer is it is not possible to tell.