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 stands at a microphone, reading from a sheet of paper at an outdoor event.
Hypothesis: A man giving an important speech to his co-workers.
Update: The members of the audience are all wearing caps and gowns.
Example Output: weakener

Example Input: Premise: A group of young girls hold hands while wearing colorful skirts while other women dance and smile around them with two men discussing something in the background.
Hypothesis: The girls are friends.
Update: The girls introduce themselves to each other.
Example Output: weakener

Example Input: Premise: A guy and a girl talking by the grocery aisle.
Hypothesis: The couple are shopping for the weeks groceries.
Update: The guy and girl are pushing a cart with an infant in it.
Example Output:
strengthener