A man is serving food at a stand that has graffiti on it.
A man is reading a newspaper.
If someone is busy reading, they don't have time to be serving food.
exists e1 e2 x1 x2 x3 x4.(at(e1,x3) & on(e2,x1) & n_thing(x1) & Actor(e2,x4) & v_graffiti(e2) & (x3 = x4) & n_stand(x3) & Theme(e1,x2) & Actor(e1,x1) & v_serve(e1) & n_food(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_newspaper(x2) & n_man(x1))