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 pulls a prank on PersonY
Hypothesis: Because PersonX wanted to have fun
Update: PersonX wanted revenge on PersonY for their prank on them.

Answer: weakener


Question: Premise: PersonX is going to win
Hypothesis: Before, PersonX needed practice
Update: They have been playing for years

Answer: strengthener


Question: Premise: PersonX takes PersonX's glasses
Hypothesis: PersonX is seen as happy
Update: PersonX just picked out some new reading glasses.

Answer:
strengthener