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 man in a yellow construction hat with a tool bag on his back, is drilling a wall labeled superior walls.
Hypothesis: A construction worker is building the walls to a house.
Update: The wall has windows in it.

Ex Output:
strengthener


Ex Input:
Premise: Erotic show with guests looking onwards.
Hypothesis: Some guests are relatives.
Update: There are two people who look identical to one of the dancers.

Ex Output:
strengthener


Ex Input:
Premise: A man is sitting, surrounded by merchandise that is for sale.
Hypothesis: the guy sits by his old stuff
Update: The man is having a garage sale.

Ex Output:

strengthener