A man wearing a black apron is cooking.
A man is taking a cooking class.
The man is cooking, but may not be taking a cooking class while doing so.
exists e1 s1 s2 x1 x2 x3.(Theme(s2,x1) & a_cooking(s2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_apron(x3) & a_black(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_class(x2) & a_cooking(s1) & Theme(s1,x2) & n_man(x1))