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: The girl with green hair and a green glove is swinging a hula hoop.
Hypothesis: A girl swinging a pink hula hoop.
Update: The hulahoop blends in with nearby flamingos.

Output: strengthener


Input: Consider Input: Premise: Four dark-haired girls walk the hall toward a bank of lockers.
Hypothesis: Girls are at the gym.
Update: They are between classes.

Output: weakener


Input: Consider Input: Premise: A row of girls dressed in black sit on a stage.
Hypothesis: A group of girls waiting for rehearsal
Update: A group of girls kill time until the director arrives for the first reading.


Output: strengthener