A basketball course among the buildings.
There is a soccer field.
A basketball course can not be a soccer field.
exists x1 x2 x3.(n_building(x3) & a_topic(x1) & among(x1,x3) & n_course(x1) & of(x1,x2) & n_basketball(x2))
exists p1 x1 x2 x3.((x1 = x2) & n_field(x2) & of(x2,x3) & n_soccer(x3))