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: A red desk chair has been rolled away from the desk.
Hypothesis: Someone wants to sit at the chair.
Update: The chair has been rolled up to a table.

Output: strengthener


Input: Consider Input: Premise: A teacher is explaining answers to a student from a book.
Hypothesis: A teacher decided to teach the students from her manual.
Update: A large group of students is sitting in front of the teacher


Output: strengthener