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: Five students are reading off a piece of paper.
Hypothesis: the students are practicing for  a test
Update: The paper is a note from another student.

Output: weakener


Input: Consider Input: Premise: A man and woman walking with their arms around each other.
Hypothesis: A couple is strolling together.
Update: The couple are madly in love.

Output: strengthener


Input: Consider Input: Premise: A man is carrying numerous penguins accross a plain.
Hypothesis: A man has successfully stolen twenty two penguins from a zoo.
Update: The man is wearing a trenchcoat and facemask.


Output: strengthener