QUESTION: If "A man talks on his cellphone on top of a construction scaffold." does that mean that "A man is talking on his cellphone on a high up construction site."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A man who talks is talking. If he is up high on a construction site he might be on top of a construction scaffold.
The answer is yes.

QUESTION: Given the sentence "A man paddling in water." can we conclude that "The man is in a rowboat."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A man paddling in water is not always in a rowboat.
The answer is it is not possible to tell.

QUESTION: Premise: "A parent holds back her son from jumping onto the tracks."
Hypothesis: "The kids are taking a bath."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
A son is singular to kids. Taking a bath is different than jumping onto tracks.
The answer is no.