Parse this person name:

Kunen Heyne, Valentijn Vera Bart Thijmen Fem, 1748-1771
user
first_name: Valentijn
last_name: Kunen Heyne
middle_names:
- Vera
- Bart
- Thijmen
- Fem
temporal:
- start: 1748
  end: 1771
  type: life_span
titles: []
extra_info: []
assistant