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 young man dressed in a t-shirt and shorts is sitting on the ground and holding his boot in his hand and smiling.
Hypothesis: the man is collecting money in his boot
Update: The man has a sign that says "Homeless, please help."
Example Output: strengthener

Example Input: Premise: A dog in a sandy area with the sand stirred up into the air and several plants in the background.
Hypothesis: The dog is a Great Dane.
Update: Someone is overheard saying 'Wow he's huge!'
Example Output: strengthener

Example Input: Premise: A Yorkie jumped into the air to catch a red ball in its mouth.
Hypothesis: The person throwing the ball is it's owner.
Update: The owner has been trying to train the Yorkie.
Example Output:
strengthener