question: What do German's Klaus-Dietrich Flade and Ernst Messerschmid have in common?
answer: astronaut
context: Title: Ernst Messerschmid
  Passage: Prof. Dr. Ernst Willi Messerschmid (born May 21, 1945) is a German physicist and former astronaut.
  Title: Klaus-Dietrich Flade
  Passage: Klaus-Dietrich Flade (born August 23, 1952) is a German pilot and former German Aerospace Center astronaut who visited the Mir space station in 1992 aboard the Soyuz TM-14 mission, returning to Earth a week later aboard Soyuz TM-13.
  Title: Uwe Flade
  Passage: Uwe Flade is a German music video director and entrepreneur.  He has directed videos for many artists, such as a-ha, Depeche Mode, Franz Ferdinand, In Extremo, Nickelback and Rammstein.  He also created worldwide successful apps for kids like nighty night and little box music box with Egmont Mayer, Heidi Wittlinger and Grit Schuster.
  Title: Hermann Flade
  Passage: Hermann Flade (22 May 1932 – 15 May 1980) was a German political scientist.
citations: Ernst Messerschmid Klaus-Dietrich Flade