Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:The GLA is different from the Corporation of the City of London with its largely ceremonial Lord Mayor .
Solution:
The GLA is different from the Corporation of the City of London with its largely ceremonial Lord Mayors , which controls only the Square Mile of the City , London 's chief financial centre .