In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Ex Input:
Premise: Two men playing ultimate Frisbee.
Hypothesis: Two guys are playing with a yellow Frisbee.
Update: The frisbee matches some tulips under a tree.

Ex Output:
strengthener


Ex Input:
Premise: Someone in an orange vest sits with a blue and yellow device in his hand.
Hypothesis: This man is a construction worker.
Update: The man is sitting on a runway of an airport

Ex Output:
weakener


Ex Input:
Premise: Two young men play basketball while crowd looks on
Hypothesis: Two men are playing basketball in front of some friends.
Update: The men are playing at an unfamiliar location.

Ex Output:

weakener