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 cubby cheeked baby in a yellow and red bib playing with a toy.
Hypothesis: The baby loves playing with toys.
Update: The baby only has one toy.
Example Output: weakener

Example Input: Premise: Girl wearing a hat and holding her bike talks to her friend.
Hypothesis: Girl holding her bike is talking to her friend with black hair.
Update: The girl's hair is dark.
Example Output: strengthener

Example Input: Premise: A man with a beard and mustache, wearing a baseball cap and sunglasses, and holding a stick is standing near a chain link fence.
Hypothesis: A man with a beard and mustache, wearing a baseball cap and sunglasses, and holding a stick is standing near a chain link fence waiting for the rest of his friends to arrive.
Update: The man has severe social anxiety.
Example Output:
weakener