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 middle eastern guy selling stuff street side.
Hypothesis: an arabian man sells flowers
Update: Bees are flying around the man's stand
Example Output: strengthener

Example Input: Premise: A professional baseball catcher and behind him an umpire are knelt in action position and are awaiting the pitch.
Hypothesis: World Series game 3 is being played
Update: They are in an empty stadium.
Example Output: weakener

Example Input: Premise: A very large man in a jacket and woolen cap is talking on his cellphone while other pedestrians walk by him.
Hypothesis: The large man weighs over 300 pounds.
Update: The jacket is large and puffy.
Example Output:
weakener