Parse this person name:

Finn van Herstal, 1900-1968, flourished 1920-1949
user
first_name: Finn
last_name: van Herstal
middle_names: []
temporal:
- start: 1900
  end: 1968
  type: life_span
- start: 1920
  end: 1949
  type: flourished
titles: []
extra_info: []
assistant