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 young man dressed in a t-shirt and shorts is sitting on the ground and holding his boot in his hand and smiling.
Hypothesis: the man is collecting money in his boot
Update: The man has a sign that says "Homeless, please help."

Output: strengthener


Input: Consider Input: Premise: Children sit in a classroom holding slates.
Hypothesis: The children are praticing math.
Update: The children are drawing pictures.

Output: weakener


Input: Consider Input: Premise: People in helmets racing down the street on skateboards.
Hypothesis: People are on skateboards in a long distance race.
Update: The people have already skateboarded two miles.


Output: strengthener