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 is great friends
Hypothesis: PersonX is seen as happy
Update: Person X is smiling big and laughing a lot.

Output: strengthener


Input: Consider Input: Premise: PersonX gives tom
Hypothesis: Before, PersonX needed to have something to give
Update: X passes along his knowledge.

Output: strengthener


Input: Consider Input: Premise: PersonX walks PersonY to PersonX's car
Hypothesis: Then, he opens the car door for Person Y
Update: PersonY passes out


Output: weakener