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: A kid on a surfboard riding a small wave.
Hypothesis: A kid on a surfboard riding a wave for a competition.
Update: The kid is being cheered on by a large crowd.

Output: strengthener


Input: Consider Input: Premise: A man sitting on a park bench watching pigeons.
Hypothesis: A man feeds pigeons while on a park bench.
Update: The man hates birds.


Output: weakener