The skinny brown dog is walking on a fallen tree.
Lightning made the tree fall so that the dog could walk upon it.
Just because the skinny brown dog is walking on a fallen tree does not indicate that lightning made the tree fall so that the dog could walk upon it.
exists e1 s1 s2 x1 x2 x3.(n_dog(x1) & a_brown(s1) & Theme(s1,x1) & of(x1,x2) & n_skinny(x2) & on(e1,x3) & n_tree(x3) & a_fallen(s2) & Theme(s2,x3) & Actor(e1,x1) & v_walk(e1))
exists e1 p1 x1 x2 x3 x4.(n_thing(x2) & n_dog(x4) & n_fall(x2) & of(x2,x3) & n_tree(x3) & exists e2 p2.(r_so(e2) & exists e3 p3.(exists e4.(upon(e4,x2) & Actor(e4,x4) & v_walk(e4)) & Topic(e3,p3) & Actor(e3,x4) & v_could(e3)) & that(e2,p2) & Theme(e2,x2) & Actor(e2,x1) & v_make(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_lightn(e1) & n_thing(x1))