TASK DEFINITION: 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.
PROBLEM: Premise: A bird's eye view of people walking up and down cement steps, most in silhouette except for two little girls.
Hypothesis: The girls are best friends.
Update: The girls are arguing.

SOLUTION: weakener

PROBLEM: 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.

SOLUTION: weakener

PROBLEM: Premise: Beautiful woman laying on a couch.
Hypothesis: A woman is lying down near on a brand new couch.
Update: The woman is posing on the sofa for a furniture company.

SOLUTION:
strengthener