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's understandable if you accidentally lose sight of your pet.
Update: your pet is a dangerous dog who tries to bite people.

Answer: weakener


Question: Hypothesis: Friendly competition between friends can be exciting.
Update: Your friends get mad when they compete

Answer: weakener


Question: Hypothesis: It's fine to refuse to do something for someone.
Update: You have previously agreed to do it

Answer:
weakener