A white dog catches a stick in the snow.
Two dogs are playing in the snow.
The fact that a white dog catches a stick in the snow doesn't imply that there are two dogs and they are playing.
exists e1 s1 x1 x2 x3.(n_snow(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_stick(x2) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_snow(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))