CREATE TABLE table_204_561 (id NUMBER, "fence" NUMBER, "name" CLOB, "jockey" CLOB, "age" NUMBER, "handicap  ( st-lb ) " CLOB, "starting price" CLOB, "fate" CLOB)

how many non finishers fates were unseated riders ?
SELECT COUNT(*) FROM table_204_561 WHERE "fate" = 'unseated rider'
SELECT COUNT(*) FROM "table_204_561" WHERE "fate" = 'unseated rider'