QUESTION: Given the sentence "A man is throwing a log into a waterway while two dogs watch." is it true that "A man has two dogs."?

Let's solve it slowly: Two dogs have a right to watch as much as a man has.
The answer is it is not possible to tell.

QUESTION: Given the sentence "A woman in a t-shirt and shorts walks with a racket on a tennis field." can we conclude that "The woman is holding something."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The woman walks with a racket so she must be holding something.
The answer is yes.

QUESTION: Premise: "A man watching 4 computer screens in a closed office with a window in the background."
Hypothesis: "A man is working hard on his computer."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
A man watching 4 computer screens in a closed office does not imply the man is working hard on his computer.
The answer is it is not possible to tell.