Complex sentence: The 123rd International Olympic Committee Session (or the 2011 International Olympic Committee Session, the 123rd IOC Session or the 2011 IOC Session) is scheduled to be held in 2011, in which the host city of the 2018 Winter Olympic Games is expected to be decided.
Split into simpler sentences: The 123rd International Olympic Committee Session (or the 2011 International Olympic Committee Session, the 123rd IOC Session or the 2011 IOC Session) is scheduled to be held in 2011. The host city of the 2018 Winter Olympic Games is expected to be decided.