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.
--------
Question: Premise: PersonX bends PersonX's elbow
Hypothesis: Before, PersonX needed to feel pain
Update: PersonX plays tennis.

Answer: weakener


Question: Premise: PersonX finishes PersonY's song
Hypothesis: PersonX is seen as proud
Update: PersonX is enjoying the recognition.

Answer: strengthener


Question: Premise: PersonX grabs PersonX's purse
Hypothesis: As a result, PersonX wants to get out of her house
Update: PersonX's car is already running and she forgot her purse.

Answer:
strengthener