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 gets a replacement
Hypothesis: PersonX is seen as satisfied
Update: The replacement works flawlessly.

Output: strengthener


Input: Consider Input: Premise: PersonX follows PersonY closely
Hypothesis: Because PersonX wanted to learn form the best
Update: PersonY is training PersonX

Output: strengthener


Input: Consider Input: Premise: PersonX tells PersonY the news
Hypothesis: Before, PersonX needed to call PersonY
Update: PersonX and PersonY are in the same room.
Output: weakener