A man and a girl are cooking breakfast.
people are cooking.
man and a girl are people.
exists p1 x1 x2 x3.(exists s1 x4.((x1 = x4) & n_breakfast(x4) & a_cooking(s1) & Theme(s1,x4)) & subset_of(x3,x1) & n_girl(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 x1.(Actor(e1,x1) & v_cook(e1) & n_people(x1))