A brown dog and a black dog are standing against each other in some grass
The dogs are participating in a dog show.
A brown dog and a black dog standing against each other in some grass are not necessarily participating in a dog show.
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x4) & n_grass(x4) & all x5.(n_other(x5) -> against(e1,x5)) & Actor(e1,x1) & v_stand(e1) & subset_of(x3,x1) & n_dog(x3) & a_black(s2) & Theme(s2,x3) & subset_of(x2,x1) & n_dog(x2) & a_brown(s1) & Theme(s1,x2))
exists e1 x1 x2.(in(e1,x2) & n_show(x2) & of(x2,x1) & n_dog(x1) & n_dog(x1) & Actor(e1,x1) & v_participate(e1))