CREATE TABLE table_204_321 (id NUMBER, "community" CLOB, "currency" CLOB, "region" CLOB, "target date" NUMBER, "notes" CLOB)

how many currency does the region of africa have
SELECT COUNT(DISTINCT "currency") FROM table_204_321 WHERE "region" = 'africa'
SELECT COUNT(DISTINCT "currency") FROM "table_204_321" WHERE "region" = 'africa'