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: An older gentleman in a checkered shirt carrying milk jugs using a yoke.
Hypothesis: The man is going to get milk for his family by foot.
Update: The milk truck can be seen off in the distance.

Ex Output:
weakener


Ex Input:
Premise: A man, woman, child sitting on benches waiting for the bus.
Hypothesis: The people are sitting outside.
Update: The wind cuts through you like a knife.

Ex Output:
strengthener


Ex Input:
Premise: Two guys and a woman standing and talking in a playground.
Hypothesis: A couple of guys in the playground are talking with the woman about kids.
Update: The men are wearing uniforms and the woman's car has been stolen.

Ex Output:

weakener