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 acceptable to raise the billing rate of a former employee.
Update: a former employee does a good job.
strengthener

Hypothesis: People are expected to appreciate gifts.
Update: The gifts are gag gifts.
weakener

Hypothesis: It's understandable to want to avoid greeting people.
Update: Unless it's your wedding.

weakener