Parse this person name:

Sigmar Bohlander (1446-1523, flourished 1474-1485)
user
first_name: Sigmar
last_name: Bohlander
middle_names: []
temporal:
- start: 1446
  end: 1523
  type: life_span
- start: 1474
  end: 1485
  type: flourished
titles: []
extra_info: []
assistant