Question: Who was born in an earlier year, Ivan Fesenko or Alexander Gelfond

Context articles: Farid Amarouche
Ivan Fesenko
Fesenko group
Janet Mbugua
Ivan the Terrible (Treblinka guard)
Alexander Gelfond
Idol 2011 (Sweden)
Baker's theorem
Ivan Sratsimir of Bulgaria
Inventory investment

Farid Amarouche is a French wheelchair athlete.
 He won the 1991 London Marathon men's wheelchair race in a close finish, setting a new course record of 1:52:52 and beating previous and future winners Hakan Ericsson, Daniel Wesley, and David Holding in the process.
 He also took part in the 1988 and 1992 Summer Paralympics, winning three gold and three silver medals in the earlier year.
Ivan Fesenko (Russian: Иван Борисович Фесенко ; born 1962) is a mathematician working in number theory and other areas of modern mathematics.
In mathematics, Fesenko groups are certain subgroups of the wild automorphism groups of local fields of positive characteristic (i.e. the Nottingham group), studied by Ivan Fesenko ().
Janet Mbugua - Ndichu (born 10 January 1984) is a Kenyan media personality, anchor and actress.
 As a news anchor she is known to have served in KTN in her earlier year of her career.
 She worked for Citizen TV for several years, before announcing her retirement from the media industry.
 She was a leading anchor at Citizen prime time news, alongside Hussein Mohammed.
 She takes a new role at Kenya Red Cross Humanitarian Society.
 As an actress she played the lead in television series "Rush".
Ivan the Terrible (born 1911) is the nickname given to a notorious guard Ivan Marchenko, at the Treblinka extermination camp during the Holocaust.
 The moniker alluded to Ivan IV, also known as Ivan the Terrible, the infamous Tsar of Russia.
 "Ivan the Terrible" gained international recognition from the 1986 John Demjanjuk case.
 Already in 1944 a cruel guard named "Ivan", sharing the distinct duties and the extremely violent behavior with a guard named "Nicholas", is mentioned in survivor literature ("Rok w Treblince" by Jankiel Wiernik, translated into English as "A Year in Treblinka" in 1945); however, very little is known about Ivan Marchenko.
 John Demjanjuk was accused first of being Ivan the Terrible at the Treblinka concentration camp, but in 2011 he was accused of war crimes as a different guard named Ivan Demjanjuk who served at the Sobibor extermination camp.
Alexander Osipovich Gelfond (Russian: Алекса́ндр О́сипович Ге́льфонд ; 24 October 1906 – 7 November 1968) was a Soviet mathematician.
 Gelfond's theorem is named after him.
Idol 2011 was the Swedish Idol series' eight season and premiered on TV4 on 4 September 2011.
 Pär Lernström was the new host of the series, after Peter Jihde declined to return as host after Idol 2010.
 Two of the judges from earlier year returned, namely Anders Bagge and Laila Bagge Wahlgren, were joined in with two new judges, Alexander Bard and Pelle Lidell.
In transcendental number theory, a mathematical discipline, Baker's theorem gives a lower bound for the absolute value of linear combinations of logarithms of algebraic numbers.
 The result, proved by , subsumed many earlier results in transcendental number theory and solved a problem posed by Alexander Gelfond nearly fifteen years earlier.
Ivan Sratsimir or Ivan Stratsimir (Bulgarian: Иван Срацимир ) was emperor (tsar) of Bulgaria in Vidin from 1356 to 1396.
 He was born in 1324 or 1325, and he died in or after 1397.
 Despite being the eldest surviving son of Ivan Alexander, Ivan Sratsimir was disinherited in favour of his half-brother Ivan Shishman and proclaimed himself emperor in Vidin.
 When the Hungarians attacked and occupied his domains, he received assistance from his father and the invaders were driven away.
Inventory investment is a component of gross domestic product (GDP).
 What is produced in a certain country is naturally also sold eventually, but some of the goods produced in a given year may be sold in a later year rather than in the year they were produced.
 Conversely, some of the goods sold in a given year might have been produced in an earlier year.
 The difference between goods produced (production) and goods sold (sales) in a given year is called inventory investment.
 The term can be applied to the economy as a whole or to an individual firm.