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 cooks PersonY
Hypothesis: As a result, PersonX feels unstable
Update: PersonX is unsteady on his feet.

Answer: strengthener


Question: Premise: PersonX hears thunder
Hypothesis: As a result, PersonX feels curious
Update: PersonX pulls back the curtain and looks out the window.

Answer: strengthener


Question: Premise: PersonX leaves PersonX's keys
Hypothesis: PersonX is seen as forgetful
Update: Someone else needs the keys

Answer:
weakener