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 tells my wife
Hypothesis: As a result, PersonX feels chatty
Update: PersonX is very tired and grumpy.

Output: weakener


Input: Consider Input: Premise: PersonX writes the book
Hypothesis: As a result, PersonX feels skillful
Update: PersonX does not like the book

Output: weakener


Input: Consider Input: Premise: PersonX buys bottled water
Hypothesis: As a result, PersonX feels prepared
Update: A natural disaster is predicted soon
Output: strengthener