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 doing a trick in the air on his bicycle
Hypothesis: A boy doing a trick is laughing.
Update: The boy is straight-faced.
[EX A]: weakener

[EX Q]: Premise: Several people are dividing up painting supplies.
Hypothesis: men and women dividing supplies
Update: Some of the people have breasts, and some have beards.
[EX A]: strengthener

[EX Q]: Premise: The plate with the cheeseburger has a knife, fork,and spoon, while the plate with the club sandwich does not.
Hypothesis: The fork, knife, and spoon fell off the plate with the club sandwich.
Update: A woman exclaims 'I dropped the club sandwich, sorry!'
[EX A]:
strengthener