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 replaces PersonY's tire
Hypothesis: Before, PersonX needed get tools together
Update: PersonY has an extensive tool collection.

Output: weakener


Input: Consider Input: Premise: PersonX gets tired
Hypothesis: PersonX is seen as sluggish
Update: PersonX moves very slowly.

Output: strengthener


Input: Consider Input: Premise: PersonX gets PersonY's back
Hypothesis: As a result, PersonX feels honorable
Update: PersonX was obligated to do so, but can't stand PersonY.


Output: weakener