CREATE TABLE table_203_875 (id NUMBER, "#" NUMBER, "name" CLOB, "birth and death" CLOB, "office started" CLOB, "office ended" CLOB)

who among iceland 's lutheran bishops has held the longest tenure to date ?
SELECT "name" FROM table_203_875 ORDER BY "office ended" - "office started" DESC LIMIT 1
SELECT "name" FROM "table_203_875" ORDER BY "office ended" - "office started" DESC FETCH FIRST 1 ROWS ONLY