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: A young boy with short blond-hair and a blue sweater taking a picture.
Hypothesis: A child is a pro photographer
Update: A child is a proven photographer.

Ex Output:
strengthener


Ex Input:
Premise: a lone skier skiing down a snowy mountain on one ski.
Hypothesis: The skier has one broken ski.
Update: The ski was too big for his foot.

Ex Output:
weakener


Ex Input:
Premise: Two workers are checking a train door.
Hypothesis: They are railroad workers
Update: The two workers have suits on.

Ex Output:

weakener