Cyclists are walking their bicycles through a tunnel.
They are in a competition.
Not a cycling is done for competition.
exists e1 x1 x2 x3.(through(e1,x3) & n_tunnel(x3) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_bicycle(x2) & of(x2,x1) & n_thing(x1) & n_cyclist(x1))
exists p1 x1.(n_thing(x1) & exists x2.(in(x1,x2) & n_competition(x2)))