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.

Input: Consider Input: Premise: Many people are walking or standing on a busy city sidewalk.
Hypothesis: An angry mob discussing how to storm a building.
Update: They are outside a business that was running a scam and want their money back.

Output: strengthener


Input: Consider Input: Premise: Four adults eat while sitting on a tile floor.
Hypothesis: Two couples eat food on a kitchen floor.
Update: The people are on a double date.

Output: strengthener


Input: Consider Input: Premise: In a crowd of people, a man stands smiling with hands up.
Hypothesis: A man is singing to god in a group.
Update: A man was introduced to speak to a crowd


Output: weakener