A girl plays on a red toy.
A girl is playing with a toy.
A girl plays on a red toy and playing with a toy implies the same.
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 e1 x1 x2.(with(e1,x2) & n_toy(x2) & Actor(e1,x1) & v_play(e1) & n_girl(x1))