Student: Premise: "A skater with dreadlocks flips his board in while in the air."\nHypothesis: "A skater with dreadlocks practices his skills by flipping his board while in the air."\nDo we know that the hypothesis entailed by the premise?.
Teacher: Let's think:

User
A skater flips his board doesn't mean he practices his skills. So the final answer is it is not possible to tell.
Assistant