The two children are being sprayed by water
Two kids are playing with a water hose.
The two children are being sprayed by water not  with a water hose.
exists e1 x1 x2.(n_child(x1) & card_eq_2(x1) & Actor(e1,x2) & n_water(x2) & Theme(e1,x1) & v_spray(e1))
exists e1 x1 x2 x3.(with(e1,x2) & n_hose(x2) & of(x2,x3) & n_water(x3) & Actor(e1,x1) & v_play(e1) & n_kid(x1) & card_eq_2(x1))