change category creative_commons (3993) -> meta
change category cc0 (129) -> meta
change category cc-by (143) -> meta
change category cc-by-nd (3) -> meta
change category cc-by-nc-nd (2116) -> meta
change category cc-by-nc (804) -> meta
change category cc-by-nc-sa (421) -> meta
change category cc-by-sa (296) -> meta
change category public_domain (1881) -> meta
change category license_info (251) -> meta