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 crosses paths
Hypothesis: As a result, PersonX feels determind
Update: PersonX cowers in fear from their bully.
Example Output: weakener

Example Input: Premise: PersonX remodels PersonX's bathroom
Hypothesis: Before, PersonX needed to buy supplies
Update: PersonX puts a hammer in their shopping cart.
Example Output: strengthener

Example Input: Premise: PersonX surprises PersonY's mother
Hypothesis: As a result, PersonX wants to suprise PersonY
Update: PersonY's mother has a weak heart.
Example Output:
weakener