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 throws water
Hypothesis: PersonX then throws more
Update: PersonX started a water fight.
Example Output: strengthener

Example Input: Premise: PersonX finds a girl
Hypothesis: Before, PersonX needed to ask them out
Update: PersonX is in a long term and committed relationship.
Example Output: weakener

Example Input: Premise: PersonX buries PersonY
Hypothesis: Before, PersonX needed to kill PersonY
Update: PersonY died of cancer.
Example Output:
weakener