Question: Who is younger Georgi Ivanov or Umberto Guidoni ?

Context paragraphs:
Umberto Guidoni: Umberto Guidoni (born in Rome 18 August 1954) is an Italian astrophysicist, science writer and a former ESA astronaut, being the first European to visit the International Space Station.  He is a veteran of two NASA space shuttle missions.  He was also a Member of the European Parliament (MEP) from 2004 to 2009, elected within the Party of Italian Communists.

Georgi Ivanov (wrestler): Georgi Ivanov (Bulgarian: Георги Иванов ) (born November 11, 1989) is a Bulgarian freestyle wrestler.  He competed in the men's freestyle 74 kg event at the 2016 Summer Olympics, in which he was eliminated in the round of 16 by Jakob Makarashvili.

Georgi Veselinov – Zograf: Georgi Ivanov Veselinov - Zograf (Bulgarian: Георги Иванов Веселинов - Зограф ) was a Bulgarian National Revival painter, public figure and deputy in the II and III National Assembly.

Marko Lerinski: Marko Lerinski (Bulgarian: Марко Лерински , "Marko of Florina"; 20 June 1862 – 13 June 1902) was the nickname of Georgi Ivanov Gyurov (Георги Иванов Гюров), also known as Georgi Geroyski or Marko Voyvoda, a Bulgarian military man and revolutionary.  A prominent member of the Internal Macedonian–Adrianople Revolutionary Organization (IMARO), Lerinski was the first person to propose a common anti-Ottoman uprising in Macedonia and Eastern Thrace.

2016–17 PFC Cherno More Varna season: This page covers all relevant details regarding PFC Cherno More Varna for all official competitions inside the 2016–17 season.  These are the Bulgarian First Professional League and Bulgarian Cup.  The team's head coach Nikola Spasov has signed a one-year contract extension immediately after the 2015–16 season, but left the club by mutual consent a few weeks later.  Subsequently, on 21 June 2016 the club appointed Georgi Ivanov as new head coach, which will be his second spell at the helm of Cherno More.

Georgi Kyoseivanov: Georgi Ivanov Kyoseivanov (Bulgarian: Георги Иванов Кьосеиванов ) (19 January 1884, Peshtera – 27 July 1960) was a Bulgarian politician who went on to serve as Prime Minister.

Georgi Partsalev: Georgi Ivanov Partsalev (Bulgarian: Георги Иванов Парцалев ; 16 June 1925 – 31 October 1989) was a Bulgarian theatre and film actor mainly known for his roles in comedies.

Georgi Ivanov (mayor): Georgi Ivanov Ivanov (born 1954) is the mayor of Haskovo, a municipality in southern Bulgaria.  He was elected to a four-year term in 1999, and re-elected in 2003, 2007 and again in 2011.

Georgi Atanasov (politician): Georgi Ivanov Atanasov (Bulgarian: Георги Иванов Атанасов) (born 25 July 1933) was a leading member of the Bulgarian Communist Party who served as Prime Minister from 1986-1990.  Atanasov supported the move to oust Todor Zhivkov as Chairman of the State Council, joining Petar Mladenov in leading the opposition.  In November 1992 he was sentenced to ten years imprisonment for embezzlement, although he was released on health grounds in 1994.  He is currently the oldest living former prime minister of Bulgaria.

Georgi Ivanov: Major general Georgi Ivanov Kakalov (Bulgarian: Георги Иванов Какалов ; born July 2, 1940) is a retired Bulgarian military officer and the first Bulgarian cosmonaut.  He was a member of the National Assembly of Bulgaria in 1990.

Supporting paragraphs: Georgi Ivanov Umberto Guidoni
Answer: Umberto Guidoni