In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

Ex Input:
Premise: PersonX opens the back door
Hypothesis: As a result, PersonX feels fit
Update: The air inside was considerably colder

Ex Output:
strengthener


Ex Input:
Premise: PersonX has to take PersonY to the doctor
Hypothesis: As a result, PersonX wants to meet the doctor
Update: They have an emergency

Ex Output:
weakener


Ex Input:
Premise: PersonX lands PersonY's dream job
Hypothesis: As a result, PersonX wants to celebrate
Update: PersonX knows their friend PersonY had hoped to land the position instead.

Ex Output:

weakener