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 starts to smell
Hypothesis: PersonX then identifies an object
Update: PersonX lost their nose many years ago in a duel.
Example Output: weakener

Example Input: Premise: PersonX walks everywhere
Hypothesis: As a result, PersonX wants to save money on gas
Update: They spend too much on gas
Example Output: weakener

Example Input: Premise: PersonX is really ugly
Hypothesis: As a result, PersonX wants to get plastic surgery
Update: Person X looks down a lot and looks sad.
Example Output:
strengthener