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: Man with no shirt and woman wearing all black are running in the sand.
Hypothesis: The people are at the beach.
Update: They are running to a cactus.

Ex Output:
weakener


Ex Input:
Premise: Eight men work on scaffolding on a cloudless day.
Hypothesis: The eight men love to work on scaffolding when the days are cloudless.
Update: the men are laughing and singing while they work

Ex Output:
strengthener


Ex Input:
Premise: city in japan with crowded streets of people
Hypothesis: There are so many people it is hard to work your way down the street.
Update: The crowd is in a well organized traffic which is going smoothly.

Ex Output:

weakener