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.

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.
strengthener

Premise: Four men, seated inside a plain room on benches and dressed in military fatigues are conversing, one man wears a white YWCA t-shirt.
Hypothesis: Four soldiers have just finished training.
Update: The men are sweaty and muddy
strengthener

Premise: A man is looking out of a bus window.
Hypothesis: the man is a traveller
Update: The man is traveling across three states to visit his ailing mother.

strengthener

