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 eats vegetables
Hypothesis: Because PersonX wanted to satisfy his hunger
Update: PersonX hasn't eaten all day.

Output: strengthener


Input: Consider Input: Premise: PersonX loses PersonX's job
Hypothesis: Before, PersonX needed do something to get fired or let go
Update: PersonX was always showing up late.

Output: strengthener


Input: Consider Input: Premise: PersonX buys an air purifier
Hypothesis: Because PersonX wanted to shopping
Update: PersonX has trouble breathing at home.


Output: weakener