A white-haired gentleman is studying a map.
a man is studying a map
The gentleman is a man and he is studying a map.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_study(e1) & n_map(x2) & n_gentleman(x1) & a_white-haired(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_study(e1) & n_map(x2) & n_man(x1))