QUESTION: Given the sentence "A woman is working as a bartender." is it true that "A woman feeding her child."?

Let's solve it slowly: She would not be feeding her child and working as a bartender simultaneously.
The answer is no.

QUESTION: If "Two men giving another a haircut." does that mean that "A least one of the men is not bald."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A man is receiving a haircut so he must not be bald.
The answer is yes.

QUESTION: If "Dirt biker on a professional riding course near an airport." does that mean that "Composed of dirt."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
A man rides his dirt bike on a track by the airport.
The answer is it is not possible to tell.