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: This is a man walking near a busy street.
Hypothesis: The man is walking because they don't have a car.
Update: The man is walking to increase the number of steps monitored by his activity device.
[EX A]: weakener

[EX Q]: Premise: A man alone crosscountry skis in the wilderness while wearing a huge backpack.
Hypothesis: A man skis in the wilderness while it's snowing
Update: The fresh powder makes the skiing smooth.
[EX A]: strengthener

[EX Q]: Premise: a shirtless man and woman in a black shirt running.
Hypothesis: The shirtless man was cold running to look for something to wear
Update: The man and woman were running on a hot summer day.
[EX A]:
weakener