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 Q]: Premise: A man dressed in black playing the trumpet.
Hypothesis: There is a man playing trumpet in a concert.
Update: The man is walking down the street.
[EX A]: weakener

[EX Q]: Premise: A pipe with one hand on it.
Hypothesis: The pipe is broken.
Update: There is water flowing through the pipe.
[EX A]: weakener

[EX Q]: Premise: Two girls are jumping over another girl, while a smaller girl watches.
Hypothesis: a group of girls playing with one another
Update: They are laughing together.
[EX A]:
strengthener