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: Two guys hold up a flag at a festival.
Hypothesis: Two guys that are brothers are at a festival.
Update: One of the guys is black and one of the guys is white.
Example Output: weakener

Example Input: Premise: A woman in a white T-shirt and a boy in a turquoise shirt are looking in the freezer section of a store.
Hypothesis: The boy is the woman's son.
Update: The woman is babysitting her neighbor's boy as she goes shopping.
Example Output:
weakener