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 concentrates on the device in her hand in the midst of a crowded establishment all lit in purple.
Hypothesis: a woman doing work in a crowd
Update: A woman wears a security jacket.

Ex Output:
strengthener


Ex Input:
Premise: Two males are sitting on a dock, one of which is playing guitar, and another two are standing in front of them.
Hypothesis: Two men are creating entertainment for money.
Update: The men wear work uniforms as they play for a few minutes and head back into their workplace.

Ex Output:
weakener


Ex Input:
Premise: Maintenance worker cleaning the side of a red and white train.
Hypothesis: A worker cleaning the side of a deisel-powered train.
Update: The train is very old and has wooden walls

Ex Output:

weakener