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: Many people sitting at the bar with drinks in front of them.
Hypothesis: Two couples have drinks at the bar together.
Update: All of the people are men.

Ex Output:
weakener


Ex Input:
Premise: A man in a yellow construction hat with a tool bag on his back, is drilling a wall labeled superior walls.
Hypothesis: A construction worker is building the walls to a house.
Update: The wall has windows in it.

Ex Output:
strengthener


Ex Input:
Premise: Topless men walking up a rocky path.
Hypothesis: Men are racing to the end of a path.
Update: The lead runner turned the bend and saw the ribbon draped across the finish line.

Ex Output:

strengthener