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: An African child attempts a headstand on the front of a boat painted blue and white in water next to a field of crops.
Hypothesis: A child is at a lake.
Update: The name of the boat is The Ocean Fisher

Output: weakener


Input: Consider Input: Premise: Couple strolling hand in hand past shop in city.
Hypothesis: A man and woman are walking on a sidewalk in a shopping mall.
Update: It's cold outside but they are not wearing jackets.


Output: strengthener