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 reads the book
Hypothesis: As a result, PersonX wants to find more titles by the same author
Update: PersonX loved the book
Example Output: strengthener

Example Input: Premise: PersonX bullies at school
Hypothesis: As a result, PersonX wants tO GET PUNISHMENT
Update: PersonX challenges the teacher to a fight.
Example Output: strengthener

Example Input: Premise: PersonX covers PersonY's retreat
Hypothesis: Because PersonX wanted protect person y
Update: X constantly scans the surroundings.
Example Output:
strengthener