In this task, you are given a hypothesis and an update. The hypothesis sentence is a statement that speaks of a socially normative behavior. In other words, it is a generalizing statement about how we expect people to behave in society. The update provides additional contexts about the situation that might UNDERMINE or SUPPORT the generalization. An undermining context provides a situation that weakens the hypothesis. A supporting context provides a situation that strengthens the generalization. Your task is to output 'strengthener' or 'weakener' if the update supports or undermines the hypothesis, respectively
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Question: Hypothesis: It is good to acknowledge when people change for the better.
Update: Acknowledging the change encourages them to keep improving.

Answer: strengthener


Question: Hypothesis: It's acceptable for a parent to not approve of their child's friend.
Update: Their child is an adult

Answer: weakener


Question: Hypothesis: It is unacceptable to try and hurt someone else.
Update: You are bullying someone on the school playground.

Answer:
strengthener