QUESTION: Given the sentence "A tan dog is grappling another tan dog on gravel while someone stands narby." is it true that "Two dogs are in a doghouse."?

Let's solve it slowly: If the two dogs are grappling on gravel they are not in a doghouse.
The answer is no.


QUESTION: Premise: "A teenager playing with a younger child."
Hypothesis: "A brothers teaches his younger sibling how to skate."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: A teenager with a younger child are not necessarily a brother and his younger sibling. A teenager playing with a younger child is not necessarily teaching the child how to skate.
The answer is it is not possible to tell.


QUESTION: Can we conclude from "Two men are sitting at the prow of a boat on a river surrounded by greenery." that "A boy plays with a ball."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
A boy cannot be two men. Someone who is playing with a ball is probably not also sitting at the prow of a boat.
The answer is no.