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 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

Output: strengthener


Input: Consider Input: Premise: Man on roof touching a shingle.
Hypothesis: Human on top of bulding grabbing a shingle.
Update: The man moves his hands over to the chimney and hangs onto it.

Output: weakener


Input: Consider Input: Premise: The white dog is jumping over hurdles.
Hypothesis: An animal is running in a race.
Update: The dog is in a backyard


Output: weakener