CREATE TABLE table_204_891 (id NUMBER, "name" CLOB, "hanzi" CLOB, "population  ( 2005 ) " NUMBER, "area  ( km2 ) " NUMBER)

does the ruyi have the same population as the yongyi ?
SELECT (SELECT "population (2005)" FROM table_204_891 WHERE "name" = 'ruyi') = (SELECT "population (2005)" FROM table_204_891 WHERE "name" = 'yongyi')
SELECT (SELECT "population (2005)" FROM "table_204_891" WHERE "name" = 'ruyi') = (SELECT "population (2005)" FROM "table_204_891" WHERE "name" = 'yongyi')