A small tourist train approaching a tunnel.
The small train is giving people a tour of the surrounding area.
The tunnel approached by the small train can be a part of the surrounding area.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_approach(e1) & n_tunnel(x4) & (x1 = x3) & n_train(x1) & of(x1,x2) & n_tourist(x2) & a_small(s1) & Theme(s1,x1))
exists e1 e2 s1 x1 x2 x3 x4.(n_area(x3) & Actor(e1,x3) & v_surround(e1) & n_train(x1) & a_small(s1) & Theme(s1,x1) & Recipient(e2,x4) & Theme(e2,x2) & Actor(e2,x1) & v_give(e2) & n_people(x4) & of(x2,x3) & n_tour(x2))