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.

Premise: Multiple people are hanging on to a pole while bystanders observe the event.
Hypothesis: They are acrobats.
Update: The people are in a large tent
strengthener

Premise: A blond boy in a blue t-shirt stands smiling before a craft of green nylon fabric.
Hypothesis: A boy is happy about his fabric choice.
Update: The boy's favorite color is green.
strengthener

Premise: Two men wearing black vests and white shirts and a girl are holding bottles of beer.
Hypothesis: A girl is serving beer to two men.
Update: The men and the girls are sitting down at the same table.

weakener