When  7 april 2001 to 29 september 2001 was aired in japan 2 how many titles were there?
create table table_1714685_1 (title varchar, aired_in_japan_3 varchar, PRIMARY KEY (title))
select count(title) from table_1714685_1 where aired_in_japan_3 = "7 april 2001 to 29 september 2001"