A black dog running on grass
A pet taking a nap on a large bed.
The subject is either running on grass or taking a nap.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_grass(x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_bed(x4) & a_large(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_nap(x3) & (x1 = x2) & n_pet(x1))