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 very happy baby in a yellow shirt swinging on swing.
Hypothesis: The child is being pushed on the swing by their mother.
Update: A babysitter is pushing the baby
[EX A]: weakener

[EX Q]: Premise: A man in a blue shirt is pushing another man in a white shirt during football practice.
Hypothesis: The offensive man is blocking the defense.
Update: The man in white weighs 300 pounds
[EX A]: strengthener

[EX Q]: Premise: A man wearing a bright, multi-color helmet is sitting on a motorcycle.
Hypothesis: man participate in the race.
Update: Other riders are sitting in a perfect line to the left and right of the man
[EX A]:
strengthener