[Q] Premise: "Two young girls hug in front of the american flag."
Hypothesis: "Two girls join isis."
Do we know that the hypothesis entailed by the premise?
[A] Two girls hugging in front of the American flag wouldn't join ISIS.
The answer is no.

[Q] Premise: "A small boy is jumping off of a brick wall onto a table below."
Hypothesis: "The boy will get hurt."
Do we know that the hypothesis entailed by the premise?
[A] A small boy is jumping off of a brick wall onto a table below does not necessary that he will get hurt.
The answer is it is not possible to tell.

[Q] Premise: "A group of people holding red flags and pamphlets in front of a large building."
Hypothesis: "A group is protesting a company."
Do we know that the hypothesis entailed by the premise?
[A] Just because A group of people holding red flags and pamphlets in front of a large building does not indicate that A group is protesting a company.
The answer is it is not possible to tell.