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.

Example Input: Premise: There are buildings in the background.
Hypothesis: buildings in the background are taking up most of the area
Update: There is a small community of trailer homes.
Example Output: weakener

Example 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.
Example Output: weakener

Example Input: Premise: There is a man in an orange shirt sitting down with a puppy and ladies in white in the background, facing the opposite direction.
Hypothesis: People are posing for a photo but got confused as to where they should look.
Update: They all laugh and get closer together.
Example Output:
strengthener