user: Question: What is the class of the Charlotte Camel GT 500 race?
Columns: ['Race', 'Length', 'Class', 'Circuit', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['24 Hour Pepsi Challenge', '24 hours', 'All', 'Daytona International Speedway', 'January 30 January 31']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Race" = 'Charlotte Camel GT 500';