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.

Input: Consider Input: Premise: A car wash worker cleaning the interior of the wheel.
Hypothesis: a person cleaning for a tip
Update: Wheel interiors are not included as a standard car wash feature.

Output: strengthener


Input: Consider Input: Premise: Two little girls reading and a baby listening.
Hypothesis: The baby is the girl's sibling.
Update: They are sitting on a living room floor, surrounded by their toys.

Output: strengthener


Input: Consider Input: Premise: A group of guys are standing on a stage playing several different instruments.
Hypothesis: A group of guys are performing a rock song.
Update: The instruments are violins, cellos, and basses.


Output: weakener