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: Two girls are standing behind another girl.
Hypothesis: Two girls are preparing to push a third girl.
Update: the third girl is on the top stair

Output: weakener


Input: Consider Input: Premise: Man with children near a bench in a suburban area.
Hypothesis: Tall humans near a bench
Update: The man is eye level with the children.

Output: weakener


Input: Consider Input: Premise: A man in the foreground wearing a white shirt and black pants riding a bicycle with a basket in a busy street.
Hypothesis: The red bicycle is racing beside the cars.
Update: The man is pedaling the bicycle fast.


Output: strengthener