im not actually sure, but my best guess would be the grass, because it appears to be in focus more, and the sky and water seem to be background. if that grass wasent meant to be the emphasis that it didnt have to be in the picture (im a photographer, but dont take my word for it, im only pretty sure im right)
It is called nationalistic music.
I like it. Like a lot of GANs art, the borders are in distinct and although the overall image resembles that of something human made, locations within it tend to make less sense to interpret. This may start to look old and gimmicky. But it will also be refined. I think Ai art could free human generated art. If you can have an image on any topic, then the emphasis becomes on coming up with interesting topics and unique compositions
Vertical and horizontal lines are an element of Mondrian's art symbolized harmony between opposites.