Question: What release date has 6998 as the production num.?
SQL: SELECT "Release date" FROM "2-18792938-6" WHERE "Production Num." = '6998';

Question: What director has LT as the series, with 6982 as the production num.?
SQL: SELECT "Director" FROM "2-18792938-6" WHERE "Series" = 'LT' AND "Production Num." = '6982';

Question: What series has 1935-07-13 as the release date?
SQL: SELECT "Series" FROM "2-18792938-6" WHERE "Release date" = '1935-07-13';

Question: What title has LT as the series, Ben Hardaway as the director, with 6612 as the production num.?
SQL: SELECT "Title" FROM "2-18792938-6" WHERE "Series" = 'LT' AND "Director" = 'Ben Hardaway' AND "Production Num." = '6612';