CREATE TABLE table_204_836 (id NUMBER, "#" NUMBER, "date" CLOB, "opponent" CLOB, "score" CLOB, "result" CLOB, "competition" CLOB)

who was the opponent after guinea in 1989 ?
SELECT "opponent" FROM table_204_836 WHERE "#" = (SELECT "#" FROM table_204_836 WHERE "opponent" = 'guinea' AND "date" = 1989) + 1
SELECT "opponent" FROM "table_204_836" WHERE "#" = (SELECT "#" FROM "table_204_836" WHERE "date" = 1989 AND "opponent" = 'guinea') + 1