Student: Premise: "An adolescent skateboards at the skate park on the beach in front of onlookers."\nHypothesis: "An adolescent has been skateboarding for two years."\nDo we know that the hypothesis entailed by the premise?.
Teacher: Let's think:

User
The adolescent might have been skateboarding for more or less than two years. So the final answer is it is not possible to tell.
Assistant