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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Example Input: Premise: A man in yellow rain gear on a boat
Hypothesis: A man is getting soaked on the boat.
Update: The man wipes his face with a towel.
Example Output: strengthener

Example Input: Premise: These people are demonstrating for their leader.
Hypothesis: The people demonstrating are male.
Update: The people are breast feeding children.
Example Output: weakener

Example Input: Premise: A young boy in red leaping into sand at a playground.
Hypothesis: A young boy jumps onto his friends sand castle at a playground.
Update: The sand is completely dry.
Example Output:
weakener