[QUESTION] If "A woman is wearing a dust mask on her mouth whilst walking in the street." does that mean that "There is a woman walking in the street."?
Options:
- yes
- it is not possible to tell
- no
A woman walking in the street is repeated in both sentences.
The answer is yes.

[QUESTION] Can we conclude from "Two people riding bikes smile at each other." that "Two smiling people are riding bicycles."?
Options:
- yes
- no
- it is not possible to tell
To smile at each other is smiling. Riding bicycles is a rephrasing of riding bikes.
The answer is yes.

[QUESTION] Test for natural language inference.
Premise: "A tennis player holds one hand to his mouth and the other holds a racket."
Hypothesis: "A person is holding a racket."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
To hold a racket in one hand is a form of holding a racket.
The answer is yes.

[QUESTION] Given the sentence "This machine is working in the dirt." can we conclude that "An object is getting dirty."?
Options:
- yes
- it is not possible to tell
- no
A machine is an object and it is working in the dirt so it is implied that it is getting dirty.
The answer is yes.