Two dogs lay on their backs on a purple bedspread.
Two cats lay on a purple bed sheet.
cats and dogs are very different animals.
exists e1 s1 x1 x2 x3.(on(e1,x2) & on(x2,x3) & n_bedspread(x3) & a_purple(s1) & Theme(s1,x3) & n_back(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_lay(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(on(e1,x2) & n_sheet(x2) & of(x2,x3) & n_bed(x3) & a_purple(s1) & Theme(s1,x2) & Actor(e1,x1) & v_lay(e1) & n_cat(x1) & card_eq_2(x1))