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 man wearing sunglasses, a cap, and a blue shirt with a Superman logo on it is walking on the sidewalk holding a stereo.
Hypothesis: The stereo that the man is holding is large.
Update: Some onlookers ask him 'You need help with that?'

Ex Output:
strengthener


Ex Input:
Premise: A young man goes air-born while his skateboard spins underneath him.
Hypothesis: The man is not wearing a helmet.
Update: His hair is flying in front of his face.

Ex Output:
strengthener


Ex Input:
Premise: three pairs of underpants are hanging from a line under a red shelter.
Hypothesis: The drier was broken and the backup was used.
Update: The house does not have electricity

Ex Output:

weakener