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: The girl with the blue bucket splashes beneath the pier.
Hypothesis: A girl has sand in her bucket.
Update: The girl's bucket is clean.

Output: weakener


Input: Consider Input: Premise: A white-haired older man in a green striped shirt is conducting in the social sciences building.
Hypothesis: A white-haired older man in a green striped shirt and black pants is conducting in the social sciences building.
Update: The man is dressed in semi-formal clothing.

Output: strengthener


Input: Consider Input: Premise: In front is a guy singing and playing guitar and a white shirted drummer in the back.
Hypothesis: Some people perform at a concert.
Update: The crowd is screaming


Output: strengthener