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

Hypothesis: It is rude to expect one of your friends will always be your designated driver.
Update: Everyone is planning to drink.
strengthener

Hypothesis: It's important to give proper notice when you are leaving your job.
Update: the job is making you do illegal things.
weakener

Hypothesis: It is acceptable to return an item that was originally purchased as a gift.
Update: there's nothing wrong with the item and you like it

weakener