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.
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Question: Premise: PersonX racks PersonX's brain
Hypothesis: As a result, PersonX feels lethargic
Update: PersonX exerts a lot of mental energy.

Answer: weakener


Question: Premise: PersonX warns PersonY
Hypothesis: PersonX is seen as concerned
Update: PersonX goes specifically to PersonY

Answer: strengthener


Question: Premise: PersonX stops but PersonY did n't listen
Hypothesis: As a result, PersonX feels finished
Update: PersonX is smiling and cheerful

Answer:
strengthener