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 white female sitting behind a programmes and ice cream stand.
Hypothesis: A woman is seated at an ice cream stand reading a book.
Update: She is eating ice cream.

Ex Output:
weakener


Ex Input:
Premise: A team prepares to play football.
Hypothesis: A team is running laps to warm up to play ball.
Update: The team is on a track.

Ex Output:
strengthener


Ex Input:
Premise: A boy surfs on a wave.
Hypothesis: The ocean is cold.
Update: He is wearing a full wetsuit.

Ex Output:

strengthener