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: Two women of Asian descent walk beside a city street busy with cars.
Hypothesis: Two women are carrying grocery bags down the street.
Update: They hurry along, each carrying at least two grocery bags in each hand.

Ex Output:
strengthener


Ex Input:
Premise: Hippies blow bubbles at a festival.
Hypothesis: The people are enjoying themselves.
Update: People are pushing, shoving and tripping over each other.

Ex Output:
weakener


Ex Input:
Premise: A person wearing a lifevest is in the air above water.
Hypothesis: A person is wearing an orange life vest.
Update: The lifevest is designed for visibility.

Ex Output:

strengthener