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: Young women practicing marshal arts in a gym.
Hypothesis: A group of women doing Tai Chi at the gym.
Update: The women are part of a class.

Output: strengthener


Input: Consider Input: Premise: Two people on bicycles, one is wearing white and black and the other is wearing blue and red.
Hypothesis: Two bicycle riders are racing.
Update: They wear racing bibs with different numbers.

Output: strengthener


Input: Consider Input: Premise: A little boy with brown hair jumped off of a brown chair onto the floor.
Hypothesis: The boy hurt his ankle when his feet hit the ground.
Update: The boy laughed and got up.


Output: weakener