A couple in green shirt and black jacket walking by a pedestrian walk.
The jacket is green
The jacket can't be green and black at the same time.
exists s1 s2 s3 x1 x2 x3 x4 x5 x6.(a_topic(x1) & by(x1,x6) & n_walk(x6) & a_pedestrian(s3) & Theme(s3,x6) & in(x1,x2) & n_walking(x4) & of(x4,x5) & n_jacket(x5) & a_black(s2) & Theme(s2,x4) & n_shirt(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_green(s1) & Theme(s1,x2) & n_couple(x1))
exists s1 x1.(n_jacket(x1) & Theme(s1,x1) & a_green(s1))