What is the nationality of XXX?
Maria Gaetana Agnesi
Maria Gaetana Agnesi (Italian pronunciation: (maˈriːa ɡaeˈtaːna aɲˈɲeːzi, -eːsi; -ɛːzi); 16 May 1718 -- 9 January 1799) was an Italian mathematician, philosopher, theologian and humanitarian.
Italian