The sidewalk closest to us is deserted.
A sidewalk is empty.
A deserted sidewalk may not be empty of objects, just of people.
exists e1 x1 x2.(n_person(x2) & r_most(x1) & n_close(x1) & of(x1,x2) & n_sidewalk(x2) & Theme(e1,x1) & v_desert(e1) & to(x1,x2))
exists s1 x1.(Theme(s1,x1) & a_empty(s1) & n_sidewalk(x1))