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.

Example Input: Premise: PersonX finds something to eat
Hypothesis: As a result, PersonX feels thankful
Update: PersonX has to eat dog food.
Example Output: weakener

Example Input: Premise: PersonX comes over to PersonY
Hypothesis: PersonX is seen as cordial
Update: PersonX is drunk
Example Output: weakener

Example Input: Premise: PersonX gets PersonY's license
Hypothesis: PersonX is seen as relieved
Update: PersonY had lost the license.
Example Output:
strengthener