Student: Premise: "A guy going off a ramp on a skateboard."
Based on this premise, can we conclude that the hypothesis "A sad guy going off a ramp on a skateboard." is true?
Options:
- yes
- it is not possible to tell
- no.
Teacher: Let's think:
A guy can go off a ramp on a skateboard without being sad. So the final answer is it is not possible to tell.