Question: Who directed the episode with production code CA311?
SQL: SELECT "Directed by" FROM "1-25740548-4" WHERE "Production code" = 'CA311';

Question: What is the series episode number of the episode titled "Sound and Vision"?
SQL: SELECT MAX("Series #") FROM "1-25740548-4" WHERE "Title" = '"Sound and Vision"';

Question: Which episode had 2.75 million viewers in the U.S.?
SQL: SELECT "Title" FROM "1-25740548-4" WHERE "U.S. viewers (million)" = '2.75';

Question: Who directed the episode with production code CA303?
SQL: SELECT "Directed by" FROM "1-25740548-4" WHERE "Production code" = 'CA303';