A chef cooks something in a skillet.
A person making food.
If someone cooks they are making food
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_cook(e1) & in(x2,x3) & n_skillet(x3) & n_thing(x2) & n_chef(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_make(e1) & n_food(x3) & (x1 = x2) & n_person(x1))