A man is sleeping on the sidewalk, on top of a box.
A homeless man is begging for change by the sidewalk
Man cannot be sleeping and begging at same time.
exists e1 x1 x2 x3 x4.(n_sidewalk(x2) & on(e1,x3) & of(x3,x4) & n_box(x4) & n_top(x3) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_sidewalk(x3) & by(e1,x3) & for(e1,x2) & n_change(x2) & Actor(e1,x1) & v_beg(e1) & n_man(x1) & a_homeless(s1) & Theme(s1,x1))