arno
"Arno" is quite vague - it could refer to a person, a place, an object, etc. Let's assume "Arno" refers to Arno River in Florence, Italy for the sake of this exercise.
A realistic description for an AI picture generator could then be: "A panoramic view of the Arno River in Florence, Italy during sunset. In the foreground, the river gently ripples with the intense colors of the setting sun - vibrant oranges and calm purples reflect