Simplify the following text for a Grade 11 native English-speaking person.
Original: The Mayor of London is also referred to as the London Mayor , a form which helps to avoid confusion with the Lord Mayor of the City of London , the ancient and now mainly ceremonial role in the geographically smaller central region of the ancient City of London .
Simplified: The Mayor of London is also referred to as the London Mayor , a form which helps to avoid confusion with the Lord Mayor of London , the ancient and now mainly ceremonial role in the City of London .