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.

Example Input: Premise: PersonX yells for help
Hypothesis: Because PersonX wanted to get someones attention to help them.
Update: PersonX looks at the script again and repeats the line.
Example Output: weakener

Example Input: Premise: PersonX buys a cake
Hypothesis: Before, PersonX needed to go to shop
Update: PersonX sits in front of a computer
Example Output: weakener

Example Input: Premise: PersonX is sitting at home
Hypothesis: As a result, PersonX feels prudent
Update: PersonX does not contract the disease.
Example Output:
strengthener