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 yellow dog running through a yard covered in leaves while holding a yellow toy in his mouth.
Hypothesis: The dog is playing fetch with a child.
Update: The dog takes the toy to a little kid nearby.
Example Output: strengthener

Example Input: Premise: Two young ladies are sitting at desks writing in notebooks.
Hypothesis: The girls are sitting at their desks.
Update: The desks are laid out in their schools gymnasium.
Example Output: weakener

Example Input: Premise: A nurse speaks to the crowd.
Hypothesis: The nurse is speaking to the patients.
Update: The nurse is giving instruction on how to protect new babies from communicable diseases.
Example Output:
weakener