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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Example Input: Premise: Man smokes while sitting on a parked scooter.
Hypothesis: A man smokes a cigarette while sitting on his scooter.
Update: The man smells of tobacco.
Example Output: strengthener

Example Input: Premise: A bunch of people standing on sand.
Hypothesis: people are standing on a beach.
Update: Everyone is standing barefoot on hot sand.
Example Output: strengthener

Example Input: Premise: Three young women in white and black dresses playing violins on a stage.
Hypothesis: Tall humans playing
Update: They are still in puberty
Example Output:
strengthener