[Q] Can we conclude from "Workers wearing reflective vests working near a train car." that "Workers wear reflective vests near trains as part of a training exercise."?
Options:
- yes
- no
- it is not possible to tell
[A] Not all workers wearing reflective vests near train cars are part of training exercises.
The answer is it is not possible to tell.

[Q] Can we conclude from "A workman with lots of pipe is fixing a rail." that "A workman is sleeping in a chair."?
Options:
- yes
- no
- it is not possible to tell
[A] A workman cannot be fixing a rail and sleeping in a chair at the same time.
The answer is no.

[Q] Premise: "Two young boys wearing jackets frolic in a large field."
Hypothesis: "They are running through the field."
Do we know that the hypothesis entailed by the premise?
[A] To frolic in a large field does not necessarily imply running through the field.
The answer is it is not possible to tell.