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 cat is watching a girl construct a Lego airplane.
Hypothesis: A cat is watching a girl build a airplane and throw it across the room
Update: The plane is only half finished

Ex Output:
weakener


Ex Input:
Premise: Several people standing in the street.
Hypothesis: people were waiting for the light to change so they could cross
Update: The police officer was holding them up with his hand.

Ex Output:
strengthener


Ex Input:
Premise: A man playing guitar performing to a crown inside of a bar.
Hypothesis: A man is performing for the last time.
Update: The man is 70 years old

Ex Output:

strengthener