Complex sentence: Nataliya Mikhailivna Vitrenko (Ukrainian: Наталія Михайлівна Вітренко) (born December 28,1951), was a candidate in the 2004 Ukrainian presidential election, nominated by the Progressive Socialist Party of Ukraine, which she has chaired since 1996.
Split into simpler sentences: Nataliya Mikhailivna Vitrenko (Ukrainian: Наталія Михайлівна Вітренко) (born December 28,1951) is a Ukrainian politician. She was a candidate in the 2004 Ukrainian presidential election, nominated by the Progressive Socialist Party of Ukraine, which she has chaired since 1996.