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 group of young girls hold hands while wearing colorful skirts while other women dance and smile around them with two men discussing something in the background.
Hypothesis: The girls are friends.
Update: The girls introduce themselves to each other.

Ex Output:
weakener


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 blurred person on a motorized bicycle while three people are on the right side of the street.
Hypothesis: Three older people wait on the curb as traffic whizzes past them.
Update: The motorcycle driver is bringing a pizza to the group in under 30 minutes or less.

Ex Output:

weakener