A man cutting fish for sale.
A woman is resting on the couch.
there can be either man or woman. cutting and resting cannot be done simultaneously.
exists e1 x1 x2 x3 x4.(a_topic(x1) & for(e1,x4) & n_sale(x4) & Theme(e1,x3) & Actor(e1,x2) & v_cut(e1) & n_fish(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_couch(x2) & on(e1,x2) & Actor(e1,x1) & v_rest(e1) & n_woman(x1))