People are standing on a train platform waiting for the train.
People are waiting for the train.
people are waiting for the train shows that  people are standing at the train platform
exists e1 e2 x1 x2 x3.(for(e1,e2) & for(e2,x3) & n_train(x3) & n_train(x3) & Actor(e2,x1) & v_wait(e2) & on(e1,x2) & n_platform(x2) & of(x2,x3) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists e1 x1 x2.(n_train(x2) & for(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))