CREATE TABLE table_63930 ("Club" TEXT, "League/Division" TEXT, "Home Ground" TEXT, "Location" TEXT, "Position in 2012-13" TEXT)

Where was the location of the Mong Kok Stadium?
SELECT "Location" FROM table_63930 WHERE "Home Ground" = 'mong kok stadium'
SELECT "Location" FROM "table_63930" WHERE "Home Ground" = 'mong kok stadium'