Question: What were the achievements of Mahiedine Mekhissi-Benabbad during the year 2004? 
Answer: Mekhissi-Benabbad made his first appearances as a junior athlete in 2004, running at the 2004 World Cross Country Championships, where he was 61st in the junior race, and participated in the 2004 World Junior Championships in the 3000 m steeplechase.