People are standing on a train platform waiting for the train.
People wait for a train.
people wait for a train can also be said as people are standing in the train platform
exists e2 e1 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.(for(e1,x2) & n_train(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))