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 group of man are sitting outside playing music.
Hypothesis: A jam session is taking place in the park.
Update: An impromptu crowd gathers around.
[EX A]: strengthener

[EX Q]: Premise: Two young men in a purple and white shirt running on grass.
Hypothesis: Two young men are playing tag.
Update: The men have frisbees.
[EX A]: weakener

[EX Q]: Premise: A man in a red cap with a nose ring.
Hypothesis: The man has a silver nose ring.
Update: The nose ring is made out of metal.
[EX A]:
strengthener