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.

Example Input: Premise: A blond woman in a green tank top rides her bicycle in front of an apartment building.
Hypothesis: The blonde woman rides back and forth in front of the apartment building hoping to see her boyfriend.
Update: The woman hopes the bouncing of her breasts in the tight green shirt will get her boyfriend to notice her.
Example Output: strengthener

Example Input: Premise: One guy skateboarding on a cement curb with his hands in the air.
Hypothesis: A guy is in a skating competition.
Update: The guy almost got hit by a passing car.
Example Output: weakener

Example Input: Premise: A man playing on road and a ball is running.
Hypothesis: A man is playing on a busy road at night.
Update: Car horns and lots of lights are seen around the man.
Example Output:
strengthener