A man is playing with his birthday cake.
a man is playing on his birthday
You would get a birthday cake on your birthday
exists e1 x1 x2 x3.(with(e1,x2) & n_cake(x2) & of(x2,x3) & n_birthday(x3) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_play(e1) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_birthday(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_play(e1) & n_man(x1))