CREATE TABLE table_204_876 (id NUMBER, "ecclesiastical jurisdictions" CLOB, "latin name" CLOB, "type" CLOB, "rite" CLOB, "ecclesiastical province" CLOB, "established" CLOB, "area  ( km2 ) " NUMBER)

how many roman catholic dioceses were established in angola before 1990 ?
SELECT COUNT("ecclesiastical jurisdictions") FROM table_204_876 WHERE "established" < 1990
SELECT COUNT("ecclesiastical jurisdictions") FROM "table_204_876" WHERE "established" < 1990