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: Many people sitting at the bar with drinks in front of them.
Hypothesis: Two couples have drinks at the bar together.
Update: All of the people are men.
Example Output: weakener

Example Input: Premise: Two men wearing sunglasses and walking outside.
Hypothesis: The two men are siblings.
Update: The men have different parents.
Example Output: weakener

Example Input: Premise: A child is looking at a dove on the sidewalk.
Hypothesis: The young child is getting her first look at a dove close up.
Update: The city is filled with doves everywhere.
Example Output:
weakener