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 pipe with one hand on it.
Hypothesis: The pipe is broken.
Update: There is water flowing through the pipe.

Output: weakener


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: A dog has its head inside a red and green gift bag.
Hypothesis: The bag has tissue paper sticking out of it.
Update: The dog has tissue paper in its mouth.


Output: strengthener