Parse this person name:

Nathan Veenstra, 1761-1841, flourished 1784-1807
user
first_name: Nathan
last_name: Veenstra
middle_names: []
temporal:
- start: 1761
  end: 1841
  type: life_span
- start: 1784
  end: 1807
  type: flourished
titles: []
extra_info: []
assistant