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 girl in an aqua tank top is watching a man in a blue tank top and shorts wash the window.
Hypothesis: The girl has a crush on the man washing windows.
Update: The girl has watched him for half an hour
Example Output: strengthener

Example Input: Premise: A child in a all pink outfit climbs on a playground toy full of other children.
Hypothesis: A kid in pink is playing hide and seek with his friends.
Update: A child in pink doesn't know where to look first.
Example Output: strengthener

Example Input: Premise: Cowboy turns back to wave out of the corral at a rodeo.
Hypothesis: A bull rider is preparing to perform in front of a crowd
Update: The cowboy is sitting on a bull.
Example Output:
strengthener