Q: Given the sentence "A mean looking dog is in the snow and showing his teeth." is it true that "A friendly dog is rolling around in the snow."?
A: A mean dog can not be a friendly dog at the same time.
The answer is no.

QUESTION: Premise: "Five workers with safety vests working on covering the walls of a covered walkway."
Hypothesis: "The workers are all women."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Just because five workers with safety vests working on covering the walls of a covered walkway doesn't mean that they all are women.
The answer is it is not possible to tell.

[QUESTION] If "Two jockeys racing on horses." does that mean that "Two jockeys are racing."?
Options:
- yes
- it is not possible to tell
- no
The fact that two jockeys racing on horses does not imply that two jockeys are racing.
The answer is it is not possible to tell.

Q: Given the sentence "A firemen team sprays a burning and smoking car with a hose on an intersection." is it true that "A group of firemen sit at the fire station idly."?
A: Firemen cannot be sitting at the fire station idly if they are putting out a burning car.
The answer is no.

QUESTION: Can we conclude from "A professional wrestler takes a flying leap onto another wrestler." that "Pro wrestlers put on a show."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A flying leap is a way to put on a show.
The answer is yes.

QUESTION: Given the sentence "A boy in a white shirt and green helmet is riding a skateboard down some steps." is it true that "The boy is skateboarding in an area where skateboarding is prohibited."?

Let's solve it slowly:
The skateboarding boy is breaking the law; what he is doing is prohibited in that place.
The answer is it is not possible to tell.