Question: What is the original air date of the episode with the production code 1115? 
SQL: SELECT "Original air date" FROM "1-18367694-2" WHERE "Production code" = 1115.0;

Question: who directed the episode with the original air date of November 22, 1989? 
SQL: SELECT "Directed by" FROM "1-18367694-2" WHERE "Original air date" = 'November 22, 1989';