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: A woman and two kids wearing hats walks down a trail.
Hypothesis: A woman and her two children are going on a hike.
Update: The two kids are of different races.

Output: weakener


Input: Consider Input: Premise: Four adults and one child visit on a backyard patio.
Hypothesis: people are sitting and talking on their vacation
Update: The people look around like they haven't seen it before.

Output: strengthener


Input: Consider Input: Premise: Two women walk down a street.
Hypothesis: Two friends are going for a walk together.
Update: The two women are laughing and joking with each other.


Output: strengthener