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 opens a new bank account
Hypothesis: Because PersonX wanted to get a better deal
Update: X compared interest rates among local banks.
Example Output: strengthener

Example Input: Premise: PersonX votes for the first time
Hypothesis: PersonX is seen as accomplished
Update: Their candidate won the election
Example Output: strengthener

Example Input: Premise: PersonX gathers PersonX's family
Hypothesis: Because PersonX wanted to spend time with them
Update: PersonX and PersonY have known each other their whole life.
Example Output:
strengthener