Parse this person name:

Kolonel Olaf van Bunschoten, Pietersbierum, 1816-1873
user
first_name: Olaf
last_name: van Bunschoten
middle_names: []
temporal:
- start: 1816
  end: 1873
  type: life_span
titles:
- Kolonel
extra_info:
- Pietersbierum
assistant