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 defends PersonY's rights
Hypothesis: PersonX then defends
Update: PersonX works on their next trial.
Example Output: strengthener

Example Input: Premise: PersonX rides PersonY's horse
Hypothesis: Before, PersonX needed to go where the horse is
Update: PersonX is parked outside Y’s house
Example Output: strengthener

Example Input: Premise: PersonX meets PersonY in the street
Hypothesis: Before, PersonX needed to leave their home and head to the street
Update: PersonX asks PersonY why they're in the street
Example Output:
weakener