A man surrounded by football players.
A coach signals the plays to a group of football players
A man surrounded by football players need not necessarily be a coach.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Actor(e1,x3) & n_player(x3) & of(x3,x4) & n_football(x4) & Theme(e1,x2) & v_surround(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(n_play(x2) & to(e1,x3) & of(x3,x4) & n_player(x4) & of(x4,x5) & n_football(x5) & n_group(x3) & Theme(e1,x2) & Actor(e1,x1) & v_signal(e1) & n_coach(x1))