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 man sawing wood on a fence.
Hypothesis: It's sunny outside while a man is cutting wood.
Update: The man is wearing a visor and sunglasses.
[A]: strengthener


[Q]: Premise: A female student concentrates on her schoolwork.
Hypothesis: A student is at school working on her schoolwork.
Update: The library is very quiet and a good place for her to finish her assignment.
[A]: strengthener


[Q]: Premise: Three people are using Washington Mutual ATM machines.
Hypothesis: Tall humans using machines
Update: all 3 people have to bend down to use the machine
[A]:
strengthener