A street artist sits on his chair post by the sidewalk, sketching a new drawing of a picture.
The boy is playing outside.
The artist that sit on his chair cannot be the one playing outside.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_sidewalk(x5) & for(e1,e2) & Theme(e2,x6) & Actor(e2,x1) & v_sketch(e2) & of(x6,x7) & n_picture(x7) & n_drawing(x6) & a_new(s1) & Theme(s1,x6) & by(e1,x5) & on(e1,x3) & n_post(x3) & of(x3,x4) & n_chair(x4) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_sit(e1) & n_artist(x1) & of(x1,x2) & n_street(x2))
exists e1 x1 x2.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2))