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, woman, child sitting on benches waiting for the bus.
Hypothesis: The people are sitting outside.
Update: The wind cuts through you like a knife.
Example Output: strengthener

Example Input: Premise: An important man with his crew walking on the field at a sporting event.
Hypothesis: The group of workers inspect the damaged field.
Update: One of the workers stops to make a note on his clipboard.
Example Output: strengthener

Example Input: Premise: Seven young girls are posed for a photo opportunity, with a dark background and a very shiny floor.
Hypothesis: Seven young girls posing for a photo in front of a dark background and shiny floor at a picture studio.
Update: The girls are holding on to a ballet bar.
Example Output:
weakener