A baby boy plays outside with a blue toy.
The baby was playing outside with a toy.
A baby boy is a baby. A blue toy is a toy. After someone plays, it's true that someone was playing.
exists e1 s1 x1 x2 x3.(with(e1,x3) & n_toy(x3) & a_blue(s1) & Theme(s1,x3) & r_outside(e1) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & of(x1,x2) & n_baby(x2))
exists e1 x1 x2.(n_baby(x1) & with(e1,x2) & n_toy(x2) & r_outside(e1) & Actor(e1,x1) & v_play(e1))