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 boy in a swimsuit walking in the sand towards the water
Hypothesis: A boy in a swimsuit happily walking
Update: The boy laughs as he walks along.
[EX A]: strengthener

[EX Q]: Premise: A man is wearing a green shirt and a welders mask.
Hypothesis: A man is hiding his identity.
Update: He stops every few yards, lifts the face piece while looking all around then returns it and goes a few more yards.
[EX A]: strengthener

[EX Q]: Premise: Man standing on a chair with a net.
Hypothesis: A man is trying to use a net to catch a bird that flew into the house.
Update: The man is hooking up a vollyball net for a game.
[EX A]:
weakener