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: Children sit in a classroom holding slates.
Hypothesis: The children are praticing math.
Update: The children are drawing pictures.

Output: weakener


Input: Consider Input: Premise: A child is wearing a white coat while squatting down in front of a person.
Hypothesis: A child is smiling with another person.
Update: The other person is giving the child a toy.

Output: strengthener


Input: Consider Input: Premise: A group of people sit on benches at a park outside a building.
Hypothesis: The people wait for the bus to come.
Update: They have money for the fare.


Output: strengthener