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: Two men are kidding around as a woman watches them.
Hypothesis: A woman watches men laughing at the bar.
Update: The two men are fighting each other.
Example Output: weakener

Example Input: Premise: A little boys is enjoying a blue lollipop.
Hypothesis: The boy is wearing a baseball cap.
Update: the boy's hair is visible, blonde and spiky
Example Output: weakener

Example Input: Premise: A man with a plaid shirt riding a bike going down a brick road with blue fence segments in the distance.
Hypothesis: The man is wearing brown shoes.
Update: The man is coming back from his office work.
Example Output:
weakener