Table: winter_in_america_releases
Columns: region
year
label
format
catalog

Question: What was the format for catalog 660-51-015?
SQL: SELECT "format" FROM winter_in_america_releases WHERE "catalog" = '660-51-015'

Question: Which region had the year May 1974?
SQL: SELECT "region" FROM winter_in_america_releases WHERE "year" = 'may 1974'

Question: Which region had a year March 10, 1998?
SQL: SELECT "region" FROM winter_in_america_releases WHERE "year" = 'march 10, 1998'