Two people are walking across a long bridge.
There's a bridge made of wood
Not all bridges are made of wood.
exists e1 s1 x1 x2.(across(e1,x2) & n_bridge(x2) & a_long(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & card_eq_2(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & of(e1,x4) & n_wood(x4) & Theme(e1,x3) & v_make(e1) & (x2 = x3) & n_bridge(x2))