from datasets import load_dataset

dataset = load_dataset(
    "parquet",
    data_files={
        "provincial_annual": "data/provincial_annual/provincial_annual.parquet",
        "national_structure": "data/national_structure/national_structure.parquet",
        "key_city_annual": "data/key_city_annual/key_city_annual.parquet",
    },
)

print(dataset["provincial_annual"][0])
print(dataset["key_city_annual"][:3])
print(dataset["national_structure"][:3])