A brown dog is laying on its back on the grass with a ball in its mouth.
The dog is brown.
"The dog is brown" is a rephrasing of "A brown dog".
exists e1 s1 x1 x2 x3 x4 x5.(n_grass(x3) & with(e1,x4) & in(x4,x5) & n_mouth(x5) & of(x5,x1) & n_thing(x1) & n_thing(x1) & n_ball(x4) & on(e1,x3) & on(e1,x2) & n_back(x2) & of(x2,x1) & Actor(e1,x1) & v_lay(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1.(n_dog(x1) & Theme(e1,x1) & v_brown(e1))