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.

Input: Consider Input: Premise: Woman and young lady sit on the sidewalk while young man plays flute in background.
Hypothesis: The man is secretly a Russian spy watching the womens' every move.
Update: He surreptitiously snaps a photo.

Output: strengthener


Input: Consider Input: Premise: Men and women outside holding hands to form circles.
Hypothesis: Some people are holding hands and singing.
Update: A banner behind them reads 'Meditation class'

Output: weakener


Input: Consider Input: Premise: A man on a bicycle sits at a stoplight with headphones on.
Hypothesis: A man is on an expensive bicycle at a stoplight.
Update: The man spent all of his money on the headphones that he had to buy a cheap used bike.


Output: weakener