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 keeps PersonY alive
Hypothesis: As a result, PersonX wants to do something for PersonY
Update: PersonX feels responsible to PersonY.

Answer: strengthener


Question: Premise: PersonX finishes PersonY's work
Hypothesis: As a result, PersonX feels reliable
Update: PersonY was unable to complete the project due to an illness.

Answer: strengthener


Question: Premise: PersonX waves goodbye
Hypothesis: Because PersonX wanted to go overseas.
Update: PersonX is carrying their passport.

Answer:
strengthener