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 warns PersonY of the danger
Hypothesis: Because PersonX wanted to be kind.
Update: PersonX wants to not be sued over liability
Example Output: weakener

Example Input: Premise: PersonX looks at PersonY's hands
Hypothesis: PersonX is seen as mystic
Update: PersonX is wearing a pinstripe suit.
Example Output: weakener

Example Input: Premise: PersonX gets some fast food
Hypothesis: PersonX is seen as full.
Update: PersonX ordered a supersize meal.
Example Output:
strengthener