A street artist sits on his chair post by the sidewalk, sketching a new drawing of a picture.
A man is outside.
Just because an artist is by the sidewalk it does not mean a man is outside.  An artist does not have to be a man.
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 s1 x1.(Theme(s1,x1) & a_outside(s1) & n_man(x1))