What is the city of birth of XXX?
Carl Friedrich Gauss
Johann Carl Friedrich Gauss (/ɡaʊs/; German: Gauß, pronounced (ɡaʊs); Latin: Carolus Fridericus Gauss) (30 April 1777 -- 23 February 1855) was a German mathematician who contributed significantly to many fields, including number theory, algebra, statistics, analysis, differential geometry, geodesy, geophysics, mechanics, electrostatics, astronomy, matrix theory, and optics.