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: A man in a blue shirt is pushing another man in a white shirt during football practice.
Hypothesis: The offensive man is blocking the defense.
Update: The offensive man is blocking the exit from the football field.

Output: weakener


Input: Consider Input: Premise: Two women and a man in a studio looking at a large portrait of Cher.
Hypothesis: Two women and a man are thinking about purchasing the large portrait of Cher.
Update: They are being shown around a friend's home.

Output: weakener


Input: Consider Input: Premise: A man on a motorcycle is towing a bicyclist on his bicycle behind him.
Hypothesis: A man on a red motorcycle is towing a bicyclist on a blue bicycle.
Update: The man's buckle accidentally scrapes yellow paint off the bicycle


Output: weakener