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: Men and women outside holding hands to form circles.
Hypothesis: Some people are holding hands and singing.
Update: A banner behind them reads 'Meditation class'

Output: weakener


Input: Consider Input: Premise: Two men playing ultimate Frisbee.
Hypothesis: Two guys are playing with a yellow Frisbee.
Update: The frisbee matches some tulips under a tree.

Output: strengthener


Input: Consider Input: Premise: A cat is watching a girl construct a Lego airplane.
Hypothesis: A cat is watching a girl build a airplane and throw it across the room
Update: The plane is only half finished


Output: weakener