guy instructing people in back of train.
The young boy disembarks off of the bus.
A train and a bus are two different means of transportation.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x4) & of(x4,x5) & n_train(x5) & n_back(x4) & Theme(e1,x3) & Actor(e1,x2) & v_instruct(e1) & n_people(x3) & (x1 = x2) & n_guy(x1))
exists e1 s1 x1 x2.(n_bus(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & r_off(e1) & of(e1,x2) & Actor(e1,x1) & v_disembark(e1))