An older man working on antiques
An elderly man is repairing some antiques
An older man working on antiques is not necessarily repairing some antiques.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_antique(x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_repair(e1) & n_antique(x2) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))