QUESTION: Given the sentence "Two dogs are leaping into a swimming pool trying to fetch the yellow toy that is floating in the water." is it true that "The two dogs want to retrieve the toy from the pool."?

Let's solve it slowly: Dogs that want to retrieve a toy from a pool may leap into that pool.
The answer is yes.

QUESTION: Premise: "A small boy in a hat grabs for a wooden box."
Hypothesis: "A boy is playing chess."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: The boy that grabs for wooden box cannot be the same one playing chess.
The answer is no.

QUESTION: Given the sentence "Two women hold a promotional poster from a movie." is it true that "Two women holding a movie poster for the next blockbuster."?

Let's solve it slowly:
The poster may be of an old or new movie and may not be a Blockbuster.
The answer is it is not possible to tell.