CREATE TABLE table_32679 ("BRNo." FLOAT, "Name" CLOB, "Builder" CLOB, "Whenbuilt" CLOB, "Withdrawn" CLOB)

What is the whenbuilt of the Brighton built Blandford Forum with a withdrawn of september 1964?
SELECT "Whenbuilt" FROM table_32679 WHERE "Builder" = 'brighton' AND "Withdrawn" = 'september 1964' AND "Name" = 'blandford forum'
SELECT "Whenbuilt" FROM "table_32679" WHERE "Builder" = 'brighton' AND "Name" = 'blandford forum' AND "Withdrawn" = 'september 1964'