the first one is the only one that is sort of a "real" grass median. The second one is the reserved space for the Wellington Linear Park (to be built as a part of this development) (you can add some plants along the grass, it doesn't change the fact it's grass beside a sidewalk), third is park space (I specifically said that is not a sidewalk grass, still we got another example of simply grass beside a sidewalk with some public art on it), and fourth is on U of T and adds to the "campus" feel of the place (the only thing it adds it's a suburban feeling, especially when you're less than 100 feet from Bay street).