a brown dog is walking down some steps under tree.
a brown dog is under a tree
A dog is walking down some steps which are under a tree so the dog must also be under a tree.
exists e1 s1 s2 x1 x2 x3.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & under(x2,x3) & n_tree(x3) & n_step(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists p1 s1 x1.(exists x2.(under(x1,x2) & n_tree(x2)) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))