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 on a motorcycle is towing a bicyclist on his bicycle behind him.
Hypothesis: A man on a red motorcycle is towing a bicyclist on a blue bicycle.
Update: The bicyclist's black helmet matches the color of his bike.

Ex Output:
weakener


Ex Input:
Premise: Family gazes as newborn sleeps on the lap of the mother.
Hypothesis: The newborn is female.
Update: The family calls the newborn by a traditionally male name.

Ex Output:
weakener


Ex Input:
Premise: A man in a red checkered shirt standing at the end of a sidewalk in a park.
Hypothesis: The man is holding  a kite.
Update: The man is looking up.

Ex Output:

strengthener