CREATE TABLE "second_line_series" (
  "airing_date" text,
  "english_title_chinese_title" text,
  "number_of_episodes" real,
  "theme_song_t_sub_theme_song_st" text,
  "genre" text,
  "official_website" text
);

Question: Which title aired on 18 dec 2006- 10 feb 2007?
SQL: SELECT "english_title_chinese_title" FROM "second_line_series" WHERE "airing_date"='18 dec 2006- 10 feb 2007';

Question: Which genre aired on 12 feb- 9 mar?
SQL: SELECT "genre" FROM "second_line_series" WHERE "airing_date"='12 feb- 9 mar';

Question: Which title had 20 episodes and aired on 11 jun- 6 jul?
SQL: SELECT "english_title_chinese_title" FROM "second_line_series" WHERE "number_of_episodes"=20 AND "airing_date"='11 jun- 6 jul';