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 gives PersonY warning
Hypothesis: Because PersonX wanted to do something nice
Update: PersonX is trying to keep PersonY from getting into trouble.
Example Output: strengthener

Example Input: Premise: PersonX makes PersonX's entry
Hypothesis: PersonX then cheered
Update: PersonX is scheduled to congratulate the winning football team.
Example Output: strengthener

Example Input: Premise: PersonX knows PersonY could do it
Hypothesis: Because PersonX wanted to support y
Update: PersonX is a rival who wants PersonY to fail
Example Output:
weakener