<!ELEMENT YEAR (#PCDATA)>
<!ELEMENT LEAGUE (LEAGUE_NAME, DIVISION, DIVISION, DIVISION)>

<!-- American or National -->
<!ELEMENT LEAGUE_NAME (#PCDATA)>

<!-- East, West, or Central -->
<!ELEMENT DIVISION_NAME (#PCDATA)>
<!ELEMENT DIVISION (DIVISION_NAME, TEAM+)>
<!ELEMENT SEASON (YEAR, LEAGUE, LEAGUE)>
<!ENTITY % team SYSTEM "team.dtd">
%team;
