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 young boy wearing a black t-shirt, holding a green baby lizard.
Hypothesis: a boy holding a lizard  that he just found
Update: The boy is in the desert.

Output: strengthener


Input: Consider Input: Premise: Man on bike in mountains
Hypothesis: A tall human on bike
Update: The man has to crouch down to steer through the mountains.

Output: strengthener


Input: Consider Input: Premise: A group of people are walking towards a building on a foggy day.
Hypothesis: The sky is gray.
Update: The sky is barely gray and sun is starting to peek through.


Output: weakener