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.

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

Example Input: Premise: PersonX wants to buy it
Hypothesis: As a result, PersonX wants to show it off to his friends
Update: It is extremely aesthetically pleasing.
Example Output: strengthener

Example Input: Premise: PersonX irritates PersonY
Hypothesis: As a result, PersonX feels manipulative
Update: PersonX did it without meaning to
Example Output:
weakener