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: Two people on bicycles, one is wearing white and black and the other is wearing blue and red.
Hypothesis: Two bicycle riders are racing.
Update: They wear racing bibs with different numbers.
[EX A]: strengthener

[EX Q]: Premise: Men and women outside holding hands to form circles.
Hypothesis: Some people are holding hands and singing.
Update: A banner behind them reads 'Meditation class'
[EX A]: weakener

[EX Q]: Premise: A young man in blue jeans and a blue tee-shirt an sunglasses is on a skateboard on pavement lined with palm trees.
Hypothesis: A man is riding a skateboard through a neighborhood he's never been to.
Update: The man is looking up at the street signs.
[EX A]:
strengthener