CREATE TABLE "table1_2226817_7" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);

Question: If the production code is 6.18, what was the episode title?
SQL: SELECT "title" FROM "table1_2226817_7" WHERE "production_code"='6.18';

Question: If the original air date January 19, 1992, who was the episode directed by?
SQL: SELECT "directed_by" FROM "table1_2226817_7" WHERE "original_air_date"='January 19, 1992';