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.

[Q]: Premise: A man is sweeping a tile floor with a broom.
Hypothesis: The man is sweeping up the floor in his kitchen.
Update: There are toilets in the room.
[A]: weakener


[Q]: Premise: Two men wearing sunglasses and walking outside.
Hypothesis: The two men are siblings.
Update: The men have different parents.
[A]: weakener


[Q]: Premise: Some Japanese people enjoy a fireworks shows from a local street.
Hypothesis: The fireworks are in many different colors.
Update: There is a color theme for the fireworks show this year.
[A]:
weakener