[['round', 'date', 'grand prix', 'circuit', 'pole position', 'fastest lap', 'race winner'], ['1', 'march 29', 'spanish grand prix', 'jerez', 'luis salom', 'daijiro hiura', 'luis salom'], ['1', 'march 30', 'spanish grand prix', 'jerez', 'luis salom', 'nelson major', 'luis salom'], ['2', 'april 12', 'portuguese grand prix', 'estoril', 'daijiro hiura', 'daijiro hiura', 'daijiro hiura'], ['3', 'may 17', 'french grand prix', 'le mans bugatti circuit', 'luis salom', 'j d beach', 'luis salom'], ['4', 'may 31', 'italian grand prix', 'mugello circuit', 'péter sebestyén', 'luis salom', 'luis salom'], ['5', 'june 21', 'british grand prix', 'donington park', 'daijiro hiura', 'sturla fagerhaug', 'miguel oliveira'], ['6', 'june 28', 'dutch tt', 'tt circuit assen', 'sturla fagerhaug', 'miguel oliveira', 'miguel oliveira'], ['7', 'july 12', 'german grand prix', 'sachsenring', 'luis salom', 'daniel kartheininger', 'j d beach'], ['8', 'august 16', 'czech republic grand prix', 'brno', 'mathew scholtz', 'nico thöni', 'mathew scholtz'], ['8', 'august 17', 'czech republic grand prix', 'brno', 'mathew scholtz', 'matthew hoyle', 'sturla fagerhaug']]
April and June were the only month that had only 1 Race
[ENT] and [ENT] were the only month that had only 1 [ENT]