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 girl in an aqua tank top is watching a man in a blue tank top and shorts wash the window.
Hypothesis: The girl has a crush on the man washing windows.
Update: The girl has watched him for half an hour
Example Output: strengthener

Example Input: Premise: A girl jumps rope on a sidewalk.
Hypothesis: A young girl is jumping rope on a sidewalk near school.
Update: Her mother calls her inside to have supper.
Example Output: weakener

Example Input: Premise: A man wearing a black shirt and blue jeans up in the air holding a plywood in each hand in front of a building that has a word "stomp".
Hypothesis: There is some graffiti on a building behind a man holding holding plywood
Update: The word Stomp is written in spray paint.
Example Output:
strengthener