Question: Who has been to space more times, Hans Schlegel or Frank De Winne?

full_context: Document 1: Expedition 21: Expedition 21 was the 21st long-duration mission to the International Space Station (ISS). The expedition began on 30 October 2009, with Frank de Winne becoming the first ESA astronaut to command a space mission.
Document 2: Gerhard Thiele: Dr. Gerhard Paul Julius Thiele (born September 2, 1953) is a German physicist and a former ESA astronaut.
Document 3: Ulf Merbold: Dr. Ulf Dietrich Merbold (born June 20, 1941) is the first West German citizen and second German native (after Sigmund Jähn) to have flown in space. He is also the first member of the European Space Agency Astronaut Corps to participate in a spaceflight mission and the first non-US citizen to reach orbit in a US spacecraft. In 1983, he and Byron Lichtenberg became the first Payload Specialists to fly on the shuttle.
Document 4: Christer Fuglesang: Arne Christer Fuglesang (] ) (born March 18, 1957 in Stockholm) is a Swedish physicist and an ESA astronaut. He was first launched aboard the STS-116 Space Shuttle mission on December 10, 2006, at 01:47 GMT, making him the first Swedish citizen in space.
Document 5: Wubbo Ockels: Wubbo Johannes Ockels (28 March 1946 – 18 May 2014) was a Dutch physicist and an astronaut of the European Space Agency (ESA). In 1985 he participated in a flight on the space shuttle Challenger, STS-61-A, making him the first Dutch citizen in space. After his astronaut career, Ockels was professor of "Aerospace for Sustainable Engineering and Technology" at the Delft University of Technology.
Document 6: European Astronaut Corps: The European Astronaut Corps is a unit of the European Space Agency (ESA) that selects, trains, and provides astronauts as crew members on U.S. and Russian space missions. As of Nov 2014, 24 ESA astronauts are now able to go board the ISS. There are currently 47 members of the Corps, 26 currently active. The European Astronaut Corps is based at the European Astronaut Centre in Cologne, Germany. They can be assigned to various projects both in Europe (at ESTEC, for instance) or elsewhere in the world, at NASA Johnson Space Center or Star City.
Document 7: Thomas Reiter: Thomas Arthur Reiter (born 23 May 1958 in Frankfurt, West Germany) is a retired European astronaut and is a Brigadier General in the German Air Force currently working as ESA Interagency Coordinator and Advisor to the Director General at the European Space Agency (ESA). He was one of the top 25 astronauts in terms of total time in space. With his wife and two sons he lives near Oldenburg in Lower Saxony.
Document 8: Ulrich Walter: Prof. Dr. Ulrich Hans Walter (born February 9, 1954) is a German physicist/engineer and a former DFVLR astronaut.
Document 9: Frank De Winne: Frank, Viscount De Winne (born 25 April 1961, in Ledeberg, Belgium) is a Belgian Air Component officer and an ESA astronaut. He is Belgium's second person in space (after Dirk Frimout). He was the first ESA astronaut to command a space mission when he served as commander of ISS Expedition 21. ESA astronaut de Winne serves currently as Head of the European Astronaut Centre of the European Space Agency in Cologne/Germany (Köln).
Document 10: Maxime De Winne: Maxime De Winne (born 22 June 1977) is a Flemish actor and theatre producer.
Document 11: DJ F.R.A.N.K.: Frank Van Herwegen (born in Schoten, Belgium on December 10, 1970) better known as DJ F.R.A.N.K., sometimes DJ Frank, DJ F.R.A.N.K or Dj F.r.a.n.k. is a Belgian DJ and record producer with great number of charting hits in Belgium, and at times in the Netherlands, France and Finland.
Document 12: Dirk Frimout: Dirk Dries David Damiaan, Viscount Frimout (born 21 March 1941 in Poperinge, Belgium) is an astrophysicist for the European Space Agency. He flew aboard NASA Space Shuttle mision STS-45 as a payload specialist , making him the first Belgian in space .
Document 13: Hans Schlegel: Hans Wilhelm Schlegel (Überlingen, 3 August 1951) is a German physicist, an ESA astronaut, and a veteran of two NASA Space Shuttle missions.
Document 14: Frederik De Winne: Frederik de Winne (born 28 May 1985 in Ghent) is a Belgian footballer who plays as a right back for KVC Jong Lede. His prior clubs included Belgian Pro League team Lokeren and Belgian Second Division team OH Leuven.
Document 15: Sigmund Jähn: Sigmund Werner Paul Jähn (born 13 February 1937) is a German cosmonaut and pilot, who in 1978 became the first East German (and German native) to fly in space as part of the Soviet Union's Interkosmos programme.
ground_truth: Hans Wilhelm Schlegel