Table: episodes_4
Columns: no_in_series
title
directed_by
written_by
original_air_date
production_code

Question: Who wrote the episode 14 in series?
SQL: SELECT "written_by" FROM episodes_4 WHERE "no_in_series" = 14

Question: Who directed the episode with production code 28?
SQL: SELECT "directed_by" FROM episodes_4 WHERE "production_code" = 28

Question: What is the original air date for the episode "a pig in a poke"?
SQL: SELECT "original_air_date" FROM episodes_4 WHERE "title" = '"A Pig in a Poke"'

Question: How many episodes were titled "a pig in a poke"? 
SQL: SELECT COUNT("written_by") FROM episodes_4 WHERE "title" = '"A Pig in a Poke"'

Question: Who wrote the episode titled "the wedding anniversary"?
SQL: SELECT "written_by" FROM episodes_4 WHERE "title" = '"The Wedding Anniversary"'