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. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

Input: Consider Input: Premise: PersonX tracks PersonY
Hypothesis: Before, PersonX needed find out PersonY's habits.
Update: X hired a PI.

Output: strengthener


Input: Consider Input: Premise: PersonX exercises PersonX's right
Hypothesis: Because PersonX wanted to be accepted
Update: The other protesters cheer for PersonX.

Output: strengthener


Input: Consider Input: Premise: PersonX rushes through PersonX's morning routine
Hypothesis: As a result, PersonX wants to not be late
Update: PersonX can set their own work hours.


Output: weakener