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.

Input: Consider Input: Premise: PersonX gives PersonY a view
Hypothesis: As a result, PersonX feels teacher
Update: PersonY snaps a picture and give PersonX their spot back.

Output: weakener


Input: Consider Input: Premise: PersonX loses PersonY job
Hypothesis: As a result, PersonX feels selfish
Update: PersonX called PersonY at work after promising not to

Output: strengthener


Input: Consider Input: Premise: PersonX notices an ad
Hypothesis: As a result, PersonX wants to call about an ad
Update: The ad is for alcohol and PersonX is a teetotaler.


Output: weakener