Three dogs are playing in the grass.
Three dogs are sitting on a couch.
You can't be playing and sitting at the same time. Grass is normally found outside while a couch is normally inside.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_3(x1))
exists e1 x1 x2.(on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1) & card_eq_3(x1))