CREATE TABLE "table1_2866503_1" (
  "no" real,
  "num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_air_date" text,
  "production_code" real,
  "u_s_viewers_million" text
);

Question: How many millions of viewers are listed where the writer is Matthew Okumura?
SQL: SELECT "u_s_viewers_million" FROM "table1_2866503_1" WHERE "written_by"='Matthew Okumura';

Question: What is the U.S air date when the title is "calling"?
SQL: SELECT "u_s_air_date" FROM "table1_2866503_1" WHERE "title"='\"Calling\"';

Question: What is the U.S. air date when the U.S. viewers are 7.5 million?
SQL: SELECT "u_s_air_date" FROM "table1_2866503_1" WHERE "u_s_viewers_million"='7.5';