[Q] Premise: "A snowboarder performs a trick by riding down the rail of a staircase."
Based on this premise, can we conclude that the hypothesis "Snowboarder flipping down staircase." is true?
Options:
- yes
- it is not possible to tell
- no
[A] The snowboarder is either flipping down the staircase or performing a trick.
The answer is no.

[Q] Test for natural language inference.
Premise: "Someone is standing down in the street and about to throw something."
Hypothesis: "A person preparing to throw a sandwich across to their friend."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
[A] Someone standing and about to throw something does not clarify that the person is trying to throw a sandwich to their friend.
The answer is it is not possible to tell.

[Q] Given the sentence "Class full of african students sitting in blue desks with teacher in the front of the classroom." is it true that "The students are learning math."?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
[A] A class of students doesn't mean they are in math class.
The answer is it is not possible to tell.