A girl plays on a red toy.
There is a person and an object.
A girl is a person and red toy represents an object.
exists e1 s1 x1 x2.(on(e1,x2) & n_toy(x2) & a_red(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1) & n_girl(x1))
exists p1 x1 x2 x3 x4.((x1 = x2) & subset_of(x4,x2) & n_object(x4) & subset_of(x3,x2) & n_person(x3))