Question: Facts:   - imagesize: 150px    - residence: dillingen , germany    - altname: sergej charkov      - birth date: 17 november 1970    - name: sergei kharkov    - club: tg saar    - discipline: mag   Based on these bullet points, write a short biography describing the life of sergei kharkov .
Answer:
sergei kharkov aka sergej charkov -lrb- born november 17 , 1970 -rrb- is a russian gymnast , olympic champion and world champion .he competed for the soviet union and the russian federation before immigrated to germany where he won the national championship 8 times .after his retirement from competition he coaches the tg saar gymnastics team in saarbrücken and performs in sport shows .kharkov is married with 2 children and lives in dillingen , germany .