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 group of little girls jumping together in a backyard.
Hypothesis: A group of girls are laughing.
Update: The girls are alone with one another and they are not being told what to do by anyone
[EX A]: strengthener

[EX Q]: Premise: Three adults take shots by a bar.
Hypothesis: There are three adult friends.
Update: The people are sitting seperately.
[EX A]: weakener

[EX Q]: Premise: A traveling boy looks sad.
Hypothesis: The boy is upset
Update: but then smiles suddenly
[EX A]:
weakener