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: This man is wearing a red helmet and flip-flops and driving a Spyder.
Hypothesis: A man driving a car to a dealer to have it tuned up.
Update: The man's Spyder glides down the road.

Ex Output:
weakener


Ex Input:
Premise: Two girls are standing behind another girl.
Hypothesis: Two girls are preparing to push a third girl.
Update: the third girl is on the top stair

Ex Output:
weakener


Ex Input:
Premise: Two people are wakeboarding in the water and are being pulled by a boat.
Hypothesis: Some great people wakeboarding.
Update: The people are smiling and laughing with each other.

Ex Output:

strengthener