Parse this person name:

Hans-Willi Sager, 1849-1913, flourished 1877-1898
user
first_name: Hans-Willi
last_name: Sager
middle_names: []
temporal:
- start: 1849
  end: 1913
  type: life_span
- start: 1877
  end: 1898
  type: flourished
titles: []
extra_info: []
assistant