Simplify the following text for a Grade 7 native English-speaking person.
Original: The Right Honourable Lord Mayor of London is the legal title for the Mayor of ( and head of ) the City of London Corporation . The Lord Mayor of London is to be distinguished from the Mayor of London ; the former is an officer only of the City of London , while the Mayor of London is the Mayor of Greater London and as such governs a much larger area .
Simplified: The Lord Mayor of London is also the chancellor of the City University of London .