A pirate is chasing a princess down the sidewalk.
Pirate on the sidewalk
If the pirate is chasing a princess down the sidewalk, he is on the sidewalk.
exists e1 x1 x2 x3.(n_sidewalk(x3) & down(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_princess(x2) & n_pirate(x1))
exists s1 x1.(n_sidewalk(x1) & ne_nam_pirate(s1) & a_topic(s1) & on(s1,x1))