CREATE TABLE "table1_2102898_1" (
  "episode" text,
  "broadcast_date" text,
  "run_time" text,
  "viewers_in_millions" text,
  "archive" text
);

Question: How many episodes ran 24:33?
SQL: SELECT COUNT("episode") FROM "table1_2102898_1" WHERE "run_time"='24:33';

Question: On broadcast date is 25april1970, how many people tuned in?
SQL: SELECT "viewers_in_millions" FROM "table1_2102898_1" WHERE "broadcast_date"='25April1970';

Question: On broadcast date is 28march1970, how many people tuned in?
SQL: SELECT "viewers_in_millions" FROM "table1_2102898_1" WHERE "broadcast_date"='28March1970';

Question: On broadcast date is 21march1970, how many people tuned in?
SQL: SELECT COUNT("viewers_in_millions") FROM "table1_2102898_1" WHERE "broadcast_date"='21March1970';

Question: What is the archive of the show that aired on 18april1970?
SQL: SELECT "archive" FROM "table1_2102898_1" WHERE "broadcast_date"='18April1970';