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 keeps PersonY from starving
Hypothesis: Before, PersonX needed to find food
Update: PersonX's refrigerator appeared to be full.

Output: weakener


Input: Consider Input: Premise: PersonX leaves the country
Hypothesis: As a result, PersonX feels fleeing
Update: PersonX is slipping in to the boat in the dark night.

Output: strengthener


Input: Consider Input: Premise: PersonX reduces to rubble
Hypothesis: As a result, PersonX wants to recall old days
Update: PersonX lays in bed, staring at the ceiling thinking about when they first learned to ride a bike.


Output: strengthener