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 bright wall painting on the street.
Hypothesis: A mural of a sunset.
Update: An onlooker remarks 'Lovely, reminds me of nights in Daytona'

Ex Output:
strengthener


Ex Input:
Premise: A boy in the woods.
Hypothesis: There is a boy headed to the woods.
Update: A police dispatcher says 'I see the guy walking towards the dark trees area'

Ex Output:
strengthener


Ex Input:
Premise: Several children playing on a Polaris vehicle outdoors.
Hypothesis: A child falls off the four wheeler as they speed down the hill.
Update: The Polaris has had a dead battery for several months now.

Ex Output:

weakener