Question: What was the inroductory phase for the episode with production code 4005?
SQL: SELECT "Introductory phrase" FROM "1-14835674-1" WHERE "Production Code" = 4005.0;

Question: What was the inroductory phase for the episode with Neil Shubin as a guest?
SQL: SELECT "Introductory phrase" FROM "1-14835674-1" WHERE "Guest" = 'Neil Shubin';

Question: What was the inroductory phase for the episode that originally aired January 21?
SQL: SELECT "Introductory phrase" FROM "1-14835674-1" WHERE "Original Airdate" = 'January 21';