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 opens the back door
Hypothesis: As a result, PersonX feels fit
Update: The air inside was considerably colder

Output: strengthener


Input: Consider Input: Premise: PersonX puts the book
Hypothesis: PersonX then cannot read it from where it is
Update: The book is closed and on a shelf.

Output: strengthener


Input: Consider Input: Premise: PersonX asks PersonY's friends for advice
Hypothesis: As a result, PersonX wants to use the advice
Update: The advice is bad


Output: weakener