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: two girls wearing a yellow shirt, one wearing a green shirt, and the last wearing a pink are each looking to the side
Hypothesis: Girls are looking at a sign on the wall.
Update: They all have a crush on the boy walking by.
[A]: weakener


[Q]: Premise: A police officer is monitoring a by stander while guarding a building.
Hypothesis: The police officer is a man.
Update: The officer looks stern.
[A]: strengthener


[Q]: Premise: Two men in black celebrating on a tennis court opposite two men in white.
Hypothesis: A group of guys just finished a tennis match.
Update: The scoreboard shows the black team to have won the match.
[A]:
strengthener