CREATE TABLE table_39876 ("Team" TEXT, "Location" TEXT, "Years in senior / adult league" TEXT, "2013 BAFA Adult division" TEXT, "2013 BAFA Adult flag division" TEXT, "2013 BAFA Junior division" TEXT, "Other teams" TEXT)

What is the 2013 BAFA junior division with a 2013 BAFA adult division in national central in the Birkenhead location?
SELECT "2013 BAFA Junior division" FROM table_39876 WHERE "2013 BAFA Adult division" = 'national central' AND "Location" = 'birkenhead'
SELECT "2013 BAFA Junior division" FROM "table_39876" WHERE "2013 BAFA Adult division" = 'national central' AND "Location" = 'birkenhead'