TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: strengthener

PROBLEM: Premise: A person in a print jacket is standing in front of a table filled with papers.
Hypothesis: The man in the print jacket is looking at the papers.
Update: The man is standing behind the table asking for people to buy them

SOLUTION: weakener

PROBLEM: Premise: A young black man on a bicycle rides the wrong way down a crowded urban street.
Hypothesis: The young guy is riding his bike to the beach.
Update: The man is wearing sandals and sunglasses

SOLUTION:
strengthener