You will be given a definition of a task first, then some input of the task.
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.

In January 1905 , Alexander Adrianov became Moscow ’ s first mayor .
Output:
In January 1905 , the institution of the City Governor , or Mayor , was officially introduced in Moscow , and Alexander Adrianov became Moscow 's first official mayor .