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.

Ex Input:
Premise: PersonX slips and fell
Hypothesis: PersonX then has a bruise
Update: PersonX fell on concrete

Ex Output:
strengthener


Ex Input:
Premise: PersonX makes a break for it
Hypothesis: Before, PersonX needed decide on direction
Update: PersonX has been planning an escape from a prison

Ex Output:
strengthener


Ex Input:
Premise: PersonX checks the time
Hypothesis: As a result, PersonX wants to go home
Update: Person X picks up his briefcase and rushes out the door.

Ex Output:
weakener