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's irresponsible not to take care of you pets.
Update: you are sitting at home.
strengthener

Hypothesis: It's rude to stop being friends with someone because of another person's wishes.
Update: They have done something hurtful to another person.
weakener

Hypothesis: It's wrong to scream at someone.
Update: you are in a library.

strengthener