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: A child in a green cap sits at a boats controls.
Hypothesis: watched by a group
Update: 3 women stare at him.

Ex Output:
strengthener


Ex Input:
Premise: Man in black takes a nap on a bench in front of a sign reading "Justicia sin Olvido."
Hypothesis: The man in black made a sign.
Update: The man has a marker with him.

Ex Output:
strengthener


Ex Input:
Premise: A young man prepares to ski down a snowy slope.
Hypothesis: The slope has many green trees.
Update: There are a lot of shady spots going down the slope.

Ex Output:

strengthener