CREATE TABLE table_204_823 (id NUMBER, "dates" CLOB, "location" CLOB, "attendance" CLOB, "official guests" CLOB, "notes" CLOB)

how many times was the rosemont convention center used ?
SELECT COUNT(*) FROM table_204_823 WHERE "location" = 'rosemont convention center'
SELECT COUNT(*) FROM "table_204_823" WHERE "location" = 'rosemont convention center'