Parse this person name:

Gravin Bas Aalts-Holthuis, Westeremden, 1700-1772
user
first_name: Bas
last_name: Aalts-Holthuis
middle_names: []
temporal:
- start: 1700
  end: 1772
  type: life_span
titles:
- Gravin
extra_info:
- Westeremden
assistant