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: Couple strolling hand in hand past shop in city.
Hypothesis: A man and woman are walking on a sidewalk in a shopping mall.
Update: It's cold outside but they are not wearing jackets.
[EX A]: strengthener

[EX Q]: Premise: A brown dog splashing through a puddle on a lawn
Hypothesis: The dog plays in the puddle during the rainstorm.
Update: Its owner took it to the dog park
[EX A]: strengthener

[EX Q]: Premise: A man at a mic playing a piano and keyboard.
Hypothesis: A man is playing in a band.
Update: A sign hanging behind him says solo night at the bar
[EX A]:
weakener