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 begins to work
Hypothesis: PersonX is seen as on task
Update: PersonX stares at a blank computer screen.

Output: weakener


Input: Consider Input: Premise: PersonX pays dividends
Hypothesis: Because PersonX wanted to reward someone for their investment
Update: PersonX scored an important client.

Output: strengthener


Input: Consider Input: Premise: PersonX prevents PersonY from giving
Hypothesis: PersonX then gets physically assaulted
Update: PersonX has a black eye.


Output: strengthener