CREATE TABLE "season_21_2013" (
  "series_ep" text,
  "episode" real,
  "segment_a" text,
  "segment_b" text,
  "segment_c" text,
  "segment_d" text
);

Question: What is listed in segment b when segment c is artificial flowers?
SQL: SELECT "segment_b" FROM "season_21_2013" WHERE "segment_c"='Artificial Flowers';

Question: What are the titles of segment c when segment d is motorcycle brake locks?
SQL: SELECT "segment_c" FROM "season_21_2013" WHERE "segment_d"='Motorcycle Brake Locks';

Question: What are the titles of segment c for series episode is 21-08?
SQL: SELECT "segment_c" FROM "season_21_2013" WHERE "series_ep"='21-08';

Question: What are the titles of segment b when segment c is standby generators (part 1)?
SQL: SELECT "segment_b" FROM "season_21_2013" WHERE "segment_c"='Standby Generators (Part 1)';

Question: What are the titles of segment a for series episode 21-12?
SQL: SELECT "segment_a" FROM "season_21_2013" WHERE "series_ep"='21-12';