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.

Ex Input:
Premise: A woman with a blue Mohawk is walking with a small child.
Hypothesis: A mother takes her child for a walk.
Update: The woman is kidnapping the child.

Ex Output:
weakener


Ex Input:
Premise: Children climbing an old tree in front of a brick building.
Hypothesis: Children are climbing an old tree in front of the school.
Update: The library in the area has been around for many years.

Ex Output:
strengthener


Ex Input:
Premise: A man keeps order on a crowded street of people.
Hypothesis: A man is directing traffic.
Update: The man is wearing a uniform.

Ex Output:

strengthener