<!ELEMENT Laps (#PCDATA)>
<!ELEMENT NumberOfLaps (#PCDATA)>
<!ELEMENT Most_Laps_Leading ( DriverID, Driver, NumberOfLaps )>
-<!ELEMENT Race_Information ( TrackLength, Laps, AverageSpeedMPH?, AverageSpeedKPH?, AverageSpeed?, TimeOfRace?, MarginOfVictory?, Cautions?, LeadChanges?, LapLeaders?, Most_Laps_Leading )>
+<!ELEMENT Race_Information ( TrackLength, Laps, AverageSpeedMPH?, AverageSpeedKPH?, AverageSpeed?, TimeOfRace?, MarginOfVictory?, Cautions?, LeadChanges?, LapLeaders?, Most_Laps_Leading? )>
<!ELEMENT time_stamp (#PCDATA)>
<!ELEMENT message ( ( XML_File_ID, heading, category, sport, RaceID, RaceDate, Title, Track_Location, Laps_Remaining, Checkered_Flag, Listing*, Race_Information, time_stamp ) )>
<!ELEMENT AverageSpeedMPH (#PCDATA)>