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 man with a beard is sitting on red painted steps.
Hypothesis: A man sits on his steps.
Update: The man is outside his home.

Output: strengthener


Input: Consider Input: Premise: There are a lot of kids walking on train tracks surrounded by trees.
Hypothesis: THE grass was green
Update: The yellow grass was a result of the drought that had hit the area.

Output: weakener


Input: Consider Input: Premise: A young black man on a bicycle rides the wrong way down a crowded urban street.
Hypothesis: The young guy is riding his bike to the beach.
Update: The guy is wearing swim trunks and flip flops.


Output: strengthener