Question: Which cosmonaut, Franz Viehböck and Sigmund Jähn, visited the Mir space station in 1991 aboard Soyuz TM-13?
{'answer': 'Franz Artur Viehböck', 'supporting_facts': [['Franz Viehböck', 0], ['Franz Viehböck', 2], ['Sigmund Jähn', 0]]}