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: Girl wearing a hat and holding her bike talks to her friend.
Hypothesis: Girl holding her bike is talking to her friend with black hair.
Update: The girl's hair is dark.
[A]: strengthener


[Q]: Premise: The white dog stands in the snow wearing a black jacket.
Hypothesis: The dog is dressed for the snow.
Update: The dog thinks he's a person.
[A]: weakener


[Q]: Premise: A woman dressed in all white and heels is walking in front of a wall with a mural on it.
Hypothesis: A woman is walking past a mural made by a famous artist.
Update: An obscure local artist walks away from the mural as he's just finished it.
[A]:
weakener