An older guy is playing chess with a young boy.
A man and his grandson compete in a chess tournament.
An older guy is not necessarily a man, a young boy is not necessarily his grandson and playing chess is not necessarily part of a chess tournament.
exists e1 s1 s2 x1 x2 x3.(with(e1,x3) & n_boy(x3) & a_young(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_chess(x2) & n_guy(x1) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4 x5.(in(e1,x4) & n_tournament(x4) & of(x4,x5) & n_chess(x5) & Actor(e1,x1) & v_compete(e1) & subset_of(x3,x1) & n_grandson(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_man(x2))