CREATE TABLE table_13912 ("Year ( s ) " TEXT, "Selection show" TEXT, "Venue" TEXT, "National final main host" TEXT, "National final co host" TEXT, "Semi final/heat host" TEXT)

What was the venue when David Jacobs was the host?
SELECT "Venue" FROM table_13912 WHERE "Semi final/heat host" = 'david jacobs'
SELECT "Venue" FROM "table_13912" WHERE "Semi final/heat host" = 'david jacobs'