รถไฟสายเกาะด่วนไปคันนิยากุมารีมีหมายเลขอะไร?
What is the train number for the train name island express with a destination of kanniyakumari?
df = pd.DataFrame(columns=['train_number', 'train_name', 'destination'])
df[(df['train_name'] == 'Island Express') & (df['destination'] == 'Kanniyakumari')]['train_number']