Simplify the following text for a Grade 11 native English-speaking person.
Original: Since it was built , five Super Bowls ( XXIII , XXIX , XXXIII , XLI , XLIV , two World Series ( '97 and ' 03 ) , and three BCS National Championship Games ( ' 01 , ' 05 ) , 2009 BCS National Championship Game have been played in the stadium .
Simplified: Since its construction , the stadium has hosted five Super Bowls ( XXIII , XXIX , XXXIII , XLI and XLIV ) , two World Series ( and ) , and three BCS National Championship Games ( 2001 , 2005 , 2009 ) .