A boy in a blue jacket on a subway train.
A boy in a red jacket on the subway platform.
first says blue jacket, second says red jacket, therefore a complete contradiction of each other as he cant be wearing both blue and red jacket
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & on(x2,x3) & n_train(x3) & of(x3,x4) & n_subway(x4) & n_jacket(x2) & a_blue(s1) & Theme(s1,x2) & n_boy(x1))
exists s1 x1 x2 x3 x4.(n_platform(x3) & of(x3,x4) & n_subway(x4) & a_topic(x1) & in(x1,x2) & on(x2,x3) & n_jacket(x2) & a_red(s1) & Theme(s1,x2) & n_boy(x1))