Parse this person name:

Hans-Gerhard Mies, 1817-1859, flourished 1841-1854
user
first_name: Hans-Gerhard
last_name: Mies
middle_names: []
temporal:
- start: 1817
  end: 1859
  type: life_span
- start: 1841
  end: 1854
  type: flourished
titles: []
extra_info: []
assistant