CREATE TABLE table_66387 ("Title" TEXT, "Series" TEXT, "Director" TEXT, "Production Num." TEXT, "Release date" TEXT)

What director has lt as the series, with 6982 as the production num.?
SELECT "Director" FROM table_66387 WHERE "Series" = 'lt' AND "Production Num." = '6982'
SELECT "Director" FROM "table_66387" WHERE "Production Num." = '6982' AND "Series" = 'lt'