People in a dark subway tunnel.
People are waiting for the subway train.
Waiting is not implied by people in a dark tunnel.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_tunnel(x2) & of(x2,x3) & n_subway(x3) & a_dark(s1) & Theme(s1,x2) & n_people(x1))
exists e1 x1 x2 x3.(n_train(x2) & of(x2,x3) & n_subway(x3) & for(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))