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: A man in a bright yellow jacket and helmet sits astride a motorcycle chatting with a man in a blue sweatshirt.
Hypothesis: Two men are talking about their bikes.
Update: One of the men points at the other man’s bike
Example Output: strengthener

Example Input: Premise: One man is working on a wristwatch while another checks his work.
Hypothesis: One man is working on a wrist watch to repair it.
Update: The man is using tiny tools.
Example Output: strengthener

Example Input: Premise: A long-haired man wearing a black t-shirt and shorts walks down a pedestrian street, with other pedestrians and storefronts in the background.
Hypothesis: A man runs down the street.
Update: The man bends to tie their shoelaces and then hunches over intently
Example Output:
strengthener