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 Input:
Premise: Outside by the trees, a woman wearing jeans and red jacket throws something for a German shepherd to chase.
Hypothesis: A young lady is teaching her pet dog how to play fetch.
Update: The woman is the wife of a K-9 officer

Ex Output:
strengthener


Ex Input:
Premise: A blond woman in a green tank top rides her bicycle in front of an apartment building.
Hypothesis: The blonde woman rides back and forth in front of the apartment building hoping to see her boyfriend.
Update: The woman hopes the bouncing of her breasts in the tight green shirt will get her boyfriend to notice her.

Ex Output:
strengthener


Ex Input:
Premise: A girl in a dress rides her bike down an empty city street.
Hypothesis: A girl is enjoying a bike ride at night.
Update: The streetlights are on.

Ex Output:

strengthener