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 good to split the costs on a date.
Update: They offered to pay half
strengthener

Hypothesis: It is good to talk to your friend about their behavior if they are being manipulative.
Update: You started the manipulation in the first place and this is the desired result.
weakener

Hypothesis: It's normal to resent sharing a romantic interest.
Update: You are a jealous person

strengthener