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: An old man juggling fire outside a street corner.
Hypothesis: A street performer is juggling.
Update: A man lost his balance and is fumbling items.
Example Output: weakener

Example Input: Premise: Various people out and about in a public place on an autumn day.
Hypothesis: A group of classmates out and about in public on an autumn day.
Update: There is a school bus parked nearby.
Example Output: strengthener

Example Input: Premise: Four women dressed in costume, one with a pink wig, look to the left.
Hypothesis: Four chicks look leftward.
Update: They're listening to Beyonce
Example Output:
strengthener