Conversation so far:
When was the moto2 world championship that Marc Marquez participated in?
Márquez confirmed that he would remain in Moto2 for the 2012 season.
Did Marc Marquez do well in the 2012 Moto2 Championship?
In 2012, Márquez won the Moto2 championship title.
Did Marc Marquez set any records?
Márquez became the youngest ever MotoGP race winner at 20 years, 63 days, beating Freddie Spencer's 30-year-old record.

Question: who did he work with?
Self-contained rewrite: Who did Marc Marquez work with?