Dog and owner sitting on lawn.
The dog and owner are playing fetch in the snow.
They can't be sitting and playing.
exists e1 s1 x1 x2 x3 x4.(ne_nam_dog(x1) & a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & n_lawn(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_owner(x2) & subset_of(x1,s1))
exists e1 x1 x2 x3 x4 x5.(n_snow(x5) & n_owner(x3) & n_dog(x2) & subset_of(x3,x1) & subset_of(x2,x1) & in(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & n_fetch(x4))