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: Tipping a cashier is nice
Update: There service was poor

Answer: weakener


Question: Hypothesis: You are expected to replace items that you broke.
Update: You are told it isn't necessary to replace the item.

Answer: weakener


Question: Hypothesis: It's wrong not to do favors for others on their birthday.
Update: You were not invited to their party.

Answer:
weakener