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: Man on bike in mountains
Hypothesis: A tall human on bike
Update: The man has to crouch down to steer through the mountains.

Output: strengthener


Input: Consider Input: Premise: Erotic show with guests looking onwards.
Hypothesis: Some guests are relatives.
Update: There are two people who look identical to one of the dancers.

Output: strengthener


Input: Consider Input: Premise: A boy is wearing a wetsuit on a crowded beach.
Hypothesis: Boy swimming
Update: The boy is allergic to sunlight


Output: weakener