CREATE TABLE news_report (journalist_id NUMBER, event_id NUMBER, work_type CLOB)
CREATE TABLE journalist (journalist_id NUMBER, name CLOB, nationality CLOB, age CLOB, years_working NUMBER)
CREATE TABLE event (event_id NUMBER, date CLOB, venue CLOB, name CLOB, event_attendance NUMBER)

What is the nationality of the journalist with the largest number of years working?
SELECT nationality FROM journalist ORDER BY years_working DESC LIMIT 1
SELECT "nationality" FROM "journalist" ORDER BY "years_working" DESC FETCH FIRST 1 ROWS ONLY