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: Child holding a bamboo object.
Hypothesis: Child holding a long wooden pole.
Update: The object has fishing line tied to the end.
Example Output: strengthener

Example Input: Premise: A young girl gliding on a rope swing beside a red barn.
Hypothesis: The girl is swinging alone.
Update: The girl is calling out someone's name
Example Output: weakener

Example Input: Premise: The woman in the blue sweater encourages the dog to jump in the air.
Hypothesis: A woman is training her dog for a competition.
Update: The woman is a professional dog trainer.
Example Output:
strengthener