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 performing acrobatics over a group of people kneeling on the ground.
Hypothesis: The acrobat is doing a hard trick.
Update: The acrobat is concentrating very intently.
[A]: strengthener


[Q]: Premise: Three people sit on the edge of a marble pool filled with green water.
Hypothesis: People are eating lunch.
Update: People are holding clipboards and microphones.
[A]: weakener


[Q]: Premise: Men in the business suits are crossing the street, and there are people with placards are gathering on the street.
Hypothesis: People with placards are getting ready for a protest.
Update: The placards have politically charged slogans on them.
[A]:
strengthener