Complex sentence: Ksenia Mikhailovna Pokrovsky was born March 9,1942 in Osh, Kyrgyzstan (Ferghana, Central Asia) where many Muscovites had been evacuated during World War II as the Nazi army advanced to within 100 miles of Moscow.
Split into simpler sentences: Ksenia Mikhailovna Pokrovsky was born March 9,1942 in Osh, Kyrgyzstan (Ferghana, Central Asia). During World War II many Muscovites were evacuated to Central Asia as the Nazi army advanced to within 100 miles of Moscow.