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 Q]: Premise: A man wearing a black shirt.
Hypothesis: A man is ready for a wedding
Update: The shirt is sleeveless.
[EX A]: weakener

[EX Q]: Premise: A man preparing his net for fishing.
Hypothesis: A young man fixes holes in a net before fishing for bait fish.
Update: The man's face is wrinkled.
[EX A]: weakener

[EX Q]: Premise: Two young barefooted girls are climbing an old lava flow with their father and mother following close behind.
Hypothesis: The children are racing eachother.
Update: The children are moving quickly.
[EX A]:
strengthener