CREATE TABLE table_12874 ("Parish  ( Prestegjeld ) " CLOB, "Sub-Parish  ( Sogn ) " CLOB, "Church Name" CLOB, "Year Built" FLOAT, "Location of the Church" CLOB)

what is the year built of kyrkjeb ?
SELECT AVG("Year Built") FROM table_12874 WHERE "Sub-Parish (Sogn)" = 'kyrkjebø'
SELECT AVG("Year Built") FROM "table_12874" WHERE "Sub-Parish (Sogn)" = 'kyrkjebø'