A man in an orange vest is working on a train.
The man on break, with his shirt off.
The man cannot be working on a train and be on break.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_train(x4) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists x1 x2 x3.(n_shirt(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & a_topic(x1) & with(x1,x3) & r_off(x3) & on(x1,x2) & n_break(x2))