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.

[Q]: Premise: A group of girls sit back to back.
Hypothesis: A group of girls are sitting on the road.
Update: The girls are refugees.
[A]: strengthener


[Q]: Premise: a group of man are sitting outside playing music.
Hypothesis: A jam session is taking place in the park.
Update: An impromptu crowd gathers around.
[A]: strengthener


[Q]: Premise: A man wearing sunglasses, a cap, and a blue shirt with a Superman logo on it is walking on the sidewalk holding a stereo.
Hypothesis: The stereo that the man is holding is large.
Update: Even Superman is getting tired carrying it.
[A]:
strengthener