Parse this person name:

Kapitein Benthe Geertsen, Westbeemster, 1745-1767
user
first_name: Benthe
last_name: Geertsen
middle_names: []
temporal:
- start: 1745
  end: 1767
  type: life_span
titles:
- Kapitein
extra_info:
- Westbeemster
assistant