Question: Who directed 414?
SQL: SELECT "Directed by" FROM "1-23483182-1" WHERE "Production code" = 414.0;

Question: What is the series number of the episode that aired March 25, 2010?
SQL: SELECT MIN("No. in series") FROM "1-23483182-1" WHERE "Original air date" = 'March 25, 2010';

Question: Who wrote the episode that aired February 4, 2010?
SQL: SELECT "Written by" FROM "1-23483182-1" WHERE "Original air date" = 'February 4, 2010';

Question: What was the air date where there were 5.72 million viewers?
SQL: SELECT "Original air date" FROM "1-23483182-1" WHERE "U.S. viewers (million)" = '5.72';

Question: What number was there 6.01 million u.s. drivers?
SQL: SELECT "No. in season" FROM "1-23483182-1" WHERE "U.S. viewers (million)" = '6.01';