A chef cooks something in a skillet.
Someone making pancakes for breakfast.
A chef does not always cook pancakes in a skillet. A skillet can be used to cook things that are not breakfast.
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.(a_topic(x1) & for(x1,x2) & n_breakfast(x2) & n_pancake(x1) & Actor(e1,x1) & v_make(e1))