human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: No. in season, No. in series, Title, Canadian airdate, US airdate, Production code
###Question: For the episode(s) aired in the U.S. on 4 april 2008, what were the names?
gpt
SELECT Title FROM table WHERE US airdate = 4 April 2008