CREATE TABLE "season_2_1956_57" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "director" text,
  "writer_s" text,
  "airdate" text
);

Question: Who wrote the episode with series number 56?
SQL: SELECT "writer_s" FROM "season_2_1956_57" WHERE "series_num"=56;

Question: What is largest series number for the episode that aired February 16, 1957?
SQL: SELECT MAX("series_num") FROM "season_2_1956_57" WHERE "airdate"='February 16, 1957';

Question: Who directed the episodes that aired December 15, 1956? 
SQL: SELECT "director" FROM "season_2_1956_57" WHERE "airdate"='December 15, 1956';

Question: Who wrote the episode that aired December 1, 1956? 
SQL: SELECT "writer_s" FROM "season_2_1956_57" WHERE "airdate"='December 1, 1956';