An old man gets some barbecue
A man gets some cake.
barbecue and cake are different things
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_barbecue(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_cake(x2) & n_man(x1))