attribution_id,organization_name,is_producer,is_authority,attribution_url,is_data_source
MK,GTFS: Mikołaj Kuranowski,1,,https://mkuran.pl/gtfs/,0
PLK,Data: PKP Polskie linie Kolejowe S.A.,,1,https://www.plk-sa.pl/klienci-i-kontrahenci/api-otwarte-dane,1
