Parse this person name:

Thoralf Fiebig, 1841-1899, flourished 1857-1873
user
first_name: Thoralf
last_name: Fiebig
middle_names: []
temporal:
- start: 1841
  end: 1899
  type: life_span
- start: 1857
  end: 1873
  type: flourished
titles: []
extra_info: []
assistant