[Q] Premise: "A man squinting with two women behind him."
Hypothesis: "A man is having trouble seeing."
Do we know that the hypothesis entailed by the premise?
[A] When you are squinting it implies you are having trouble seeing.
The answer is yes.

[Q] Given the sentence "A group of women separating melons." is it true that "Women are cutting up melons."?
[A] In order to be separating melons you must be cutting melons.
The answer is yes.

[Q] Given the sentence "A gray dog is shaking water from its body." is it true that "An animal is cold so he is drying himself."?
[A] There is not way to know if the gray dog is shaking water from its body because its cold or not.
The answer is it is not possible to tell.