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.

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

Output: strengthener


Input: Consider Input: Premise: PersonX replaces PersonX's old one
Hypothesis: PersonX then keep the new one
Update: The old one smells

Output: weakener


Input: Consider Input: Premise: PersonX loves PersonY still
Hypothesis: As a result, PersonX wants to give up
Update: PersonY talks to PersonX for hours.
Output: weakener