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: Two men and a young boy in purple jacket hold out promotional flyer's.
Hypothesis: People hand out flyer's.
Update: There is a stack of flyers on a table next to them.

Output: strengthener


Input: Consider Input: Premise: An older man using a microscope to have more finesse in woodworking.
Hypothesis: man teaches new technique
Update: Nobody is watching the man.

Output: weakener


Input: Consider Input: Premise: two dogs play together.
Hypothesis: T pets playing tug of war with a rope.
Update: The bigger of the two has an obvious advantage as the smaller one loses ground but refuses to let go.


Output: strengthener