CREATE TABLE "table1_26961951_6" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "u_s_viewers_million" text
);

Question: What is the title of the episode directed by Romeo Tirone?
SQL: SELECT "title" FROM "table1_26961951_6" WHERE "directed_by"='Romeo Tirone';

Question: When did the episode written by Abe Sylvia originally air?
SQL: SELECT "original_air_date" FROM "table1_26961951_6" WHERE "written_by"='Abe Sylvia';

Question: Which episode number had a viewership of 0.56 million?
SQL: SELECT MAX("no_in_series") FROM "table1_26961951_6" WHERE "u_s_viewers_million"='0.56';

Question: Who was the writer in the episode directed by Jesse Peretz?
SQL: SELECT "written_by" FROM "table1_26961951_6" WHERE "directed_by"='Jesse Peretz';