A man in a white shirts waits for a person to prepare the food.
A man waits for a cook to make pizza.
The man waiting for prepared food, doesn't have to be waiting for pizza.
exists p1 s1 x1 x2 x3 x4 x5.(n_food(x5) & a_topic(x1) & in(x1,x2) & for(x2,x4) & Topic(x4,p1) & exists e1.(Theme(e1,x5) & Actor(e1,x4) & v_prepare(e1)) & n_person(x4) & n_wait(x2) & of(x2,x3) & n_shirt(x3) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists e1 p1 x1 x2.(for(e1,x2) & Topic(x2,p1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_make(e2) & n_pizza(x3)) & n_cook(x2) & Actor(e1,x1) & v_wait(e1) & n_man(x1))