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: Runner 3618 is racing down the street.
Hypothesis: The runner is sweaty.
Update: The runner is dripping with sweat despite only being halfway through the race.
Example Output: strengthener

Example Input: Premise: Older men look out over a balcony.
Hypothesis: Older men are looking at the scenery.
Update: The balcony overlooks a stream and wildlife in the Montana mountains.
Example Output: strengthener

Example Input: Premise: A woman is sitting outside while holding two cats.
Hypothesis: This person likes cats.
Update: The cats keep the woman company after her husband died.
Example Output:
strengthener