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 man in costume drums in a parade.
Hypothesis: There is a man playing drums on a float.
Update: The man is marching with the rest of his band.

Output: weakener


Input: Consider Input: Premise: A couple kissing on the neck on a busy street.
Hypothesis: The couple is male and female.
Update: The two people kissing are David and Emily.

Output: strengthener


Input: Consider Input: Premise: A group of people with instruments are standing in the middle of a street.
Hypothesis: The group of people are waiting to play music in a parade.
Update: There are floats in front of them and behind them.


Output: strengthener