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: Man painting over Graffiti in a station.
Hypothesis: The city worker re-paints the subway stations walls.
Update: The sign out front says BP.

Output: weakener


Input: Consider Input: Premise: Young lady diving into a swimming pool wearing only a bikini with half of her body submerged.
Hypothesis: a lady diving into a swimming pool on a hot summer day
Update: There is a bottle of sunscreen on the edge of the pool

Output: strengthener


Input: Consider Input: Premise: A slightly overweight young man, with long black hair and a green sweatshirt, leans back in a chair holding a bottle to his chest.
Hypothesis: A man is at home enjoying a tv show
Update: There is the sound of a tv show in the background


Output: strengthener