People are waiting in line for a train.
People wait at the dmv to be called.
People waiting for a train cannot also be waiting at the dmv simultaneously
exists e1 x1 x2 x3.(for(e1,x3) & n_train(x3) & in(e1,x2) & n_line(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))
exists e1 p1 x1 x2.(n_dmv(x2) & at(e1,x2) & Topic(e1,p1) & Actor(e1,x1) & v_wait(e1) & exists e2.(Theme(e2,x1) & v_call(e2)) & n_people(x1))