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: The man is driving his equipment under the archway.
Hypothesis: The sad man is driving his equipment under the archway.
Update: The man just got a promotion at work.

Ex Output:
weakener


Ex Input:
Premise: A lady with a yellow blouse and glasses at a desk with a laptop computer.
Hypothesis: the computer is a dell
Update: The woman works for Dell.

Ex Output:
strengthener


Ex Input:
Premise: A smiling man and a boy with a backpack on are walking on a sidewalk.
Hypothesis: The man and boy are father and son.
Update: The man and boy are near their house.

Ex Output:

strengthener