[['race', 'length', 'class', 'circuit', 'date'], ['sunbank 24 at daytona', '24 hours', 'all', 'daytona international speedway', 'february 2 february 3'], ['löwenbräu grand prix of miami', '3 hours', 'proto', 'streets of miami', 'february 24'], ['löwenbräu grand prix of miami', '45 minutes', 'gto', 'streets of miami', 'february 24'], ['löwenbräu grand prix of miami', '45 minutes', 'gtu', 'streets of miami', 'february 24'], ['coca - cola classic 12 hours of sebring', '12 hours', 'all', 'sebring international raceway', 'march 23'], ['atlanta journal - constitution grand prix', '500 km', 'all', 'road atlanta', 'april 14'], ['los angeles times / nissan grand prix', '600 km', 'all', 'riverside international raceway', 'april 28'], ['nissan monterey triple crown', '300 km', 'proto', 'laguna seca raceway', 'may 5'], ['nissan monterey triple crown', '100 km', 'gt', 'laguna seca raceway', 'may 5'], ['grand prix of charlotte', '300 km', 'gt', 'charlotte motor speedway', 'may 18'], ['grand prix of charlotte', '500 km', 'proto', 'charlotte motor speedway', 'may 19'], ['coca - cola 500', '2 hours', 'gt', 'lime rock park', 'may 27'], ['coca - cola 500', '2 hours', 'proto', 'lime rock park', 'may 27'], ["lumbermen 's 500k", '300 km', 'gt', 'mid - ohio sports car course', 'june 8'], ["lumbermen 's 500k", '500 km', 'proto', 'mid - ohio sports car course', 'june 9'], ['camel continental', '3 hours', 'gt', 'watkins glen international', 'july 6'], ['camel continental', '3 hours', 'proto', 'watkins glen international', 'july 6'], ["gi joe 's grand prix", '200 km', 'gt', 'portland international raceway', 'july 28'], ["gi joe 's grand prix", '300 km', 'proto', 'portland international raceway', 'july 28'], ['ford california grand prix', '300 km', 'proto', 'sears point raceway', 'august 4'], ['ford california grand prix', '100 km', 'gt', 'sears point raceway', 'august 4'], ['löwenbräu classic', '500 miles', 'all', 'road america', 'august 25'], ['grand prix at pocono', '500 km', 'all', 'pocono raceway', 'september 8'], ['serengeti drivers new york 500', '500 km', 'all', 'watkins glen international', 'september 29'], ['columbus ford dealers 500', '1 hour', 'gt', 'columbus street course', 'october 5'], ['columbus ford dealers 500', '500 km', 'proto', 'columbus street course', 'october 6'], ['eastern 3 hours of daytona', '3 hours', 'all', 'daytona international speedway', 'december 1']]
the Löwenbräu Grand Prix Of Miami contained 3 separate Class
the [ENT] contained 3 separate [ENT]