Question: Who was the mayor that proclaimed independence from the German Empire for  Alsace-Lorraine?
Sentence: While Jacques Peirotes, at this time deputy at the Landrat Elsass-Lothringen and just elected mayor of Strasbourg, proclaimed the forfeiture of the German Empire and the advent of the French Republic, a self-proclaimed government of Alsace-Lorraine declared independence as the "Republic of Alsace-Lorraine".
Answer in sentence: yes