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 with glasses is holding a very young infant.
Hypothesis: a man holds his niece
Update: They live in the same house.
Example Output: weakener

Example Input: Premise: A child in a white dress.
Hypothesis: The child is participating in a wedding.
Update: The child is trying on the dress in a store.
Example Output: weakener

Example Input: Premise: A person in baggy pants and brown hoodie, with a backpack, walks on a sidewalk with signs in Chinese.
Hypothesis: The young man in baggy clothes is in Chinatown in San Francisco looking for a place to get a meal.
Update: Everyone on the street is Asian
Example Output:
weakener