A man dressed in black is standing above a white dog.
A man pets a cat.
there can be either cat or white dog at the same time
exists e2 e1 s1 s2 x1 x2 x3 x4.(above(e2,x4) & n_dog(x4) & a_white(s2) & Theme(s2,x4) & Actor(e2,x1) & v_stand(e2) & Theme(e1,s1) & Theme(s1,x3) & a_black(s1) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_pet(e1) & n_cat(x2) & n_man(x1))