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 boy wearing blue shorts is doing a back flip in the air under a tree.
Hypothesis: A boy is doing back flips outdoors
Update: The tree is in the local park

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 baseball player rounds the bases while another makes a leaping dive for the ball.
Hypothesis: The player is about to score.
Update: The leaping man misses and the ball is gone.


Output: strengthener