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.
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Question: Premise: A boy in a black shirt punches a yellow punching bag while a boy in a blue sweatshirt holds the bag.
Hypothesis: Two boys take turns using a punching bag.
Update: They are both training.

Answer: strengthener


Question: Premise: Three people in white clothes observe graffiti on the side of a building.
Hypothesis: The people in white are going to paint over the graffiti.
Update: the people take out cameras and take photos

Answer: weakener


Question: Premise: Band playing in gazebo while couple dances in foreground.
Hypothesis: The band was playing.
Update: There's loud music coming from the gazebo.

Answer:
strengthener