CREATE TABLE table_47266 ("Year" FLOAT, "Date" CLOB, "Winner" CLOB, "Result" CLOB, "Location" CLOB)

what is the year when the location is yankee stadium and the result is 23-23
SELECT AVG("Year") FROM table_47266 WHERE "Location" = 'yankee stadium' AND "Result" = '23-23'
SELECT AVG("Year") FROM "table_47266" WHERE "Location" = 'yankee stadium' AND "Result" = '23-23'