CREATE TABLE table_68853 ("City" CLOB, "Country" CLOB, "IATA" CLOB, "ICAO" CLOB, "Airport" CLOB)

Name the city that has singapore changi airport
SELECT "City" FROM table_68853 WHERE "Airport" = 'singapore changi airport'
SELECT "City" FROM "table_68853" WHERE "Airport" = 'singapore changi airport'