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: A bird's eye view of people walking up and down cement steps, most in silhouette except for two little girls.
Hypothesis: The girls are best friends.
Update: The girls are arguing.
[A]: weakener


[Q]: Premise: A man dressed in black is playing a red guitar.
Hypothesis: The man is performing for money.
Update: The man is playing Happy Birthday.
[A]:
weakener