Picture of a train and people in a subway.
The people are waiting for a bus.
It's either a subway or a bus.
exists x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & subset_of(x4,x2) & in(x4,x5) & n_subway(x5) & n_people(x4) & subset_of(x3,x2) & n_train(x3) & n_picture(x1))
exists e1 x1 x2.(n_people(x1) & for(e1,x2) & n_bus(x2) & Actor(e1,x1) & v_wait(e1))