The couple pushed the strollers across the wood bridge and the dogs followed.
People and their pets cross the river on a bridge.
Just because a couple crosses a bridge does not mean that they are going across a river.
exists e2 e1 x1 x2 x3 x4 x5.(n_dog(x5) & n_bridge(x3) & of(x3,x4) & n_wood(x4) & n_stroller(x2) & n_couple(x1) & Actor(e2,x5) & v_follow(e2) & Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & across(x2,x3))
exists e1 x1 x2 x3 x4 x5.(n_river(x4) & on(e1,x5) & n_bridge(x5) & Theme(e1,x4) & Actor(e1,x1) & v_cross(e1) & subset_of(x3,x1) & n_pet(x3) & of(x3,x2) & n_thing(x2) & subset_of(x2,x1) & n_people(x2))