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: Parents are expected to share the duty of raising their children.
Update: Both parents work equal hours at their jobs.

Answer: strengthener


Question: Hypothesis: Spouses should always know each other's birthdays.
Update: Neither person enjoys the annual reminder they're getting older.

Answer: weakener


Question: Hypothesis: It is rude to tell your ex they need to make new prom plans at the last minute.
Update: You've known for a while you were not going to go with them.

Answer:
strengthener