Parse this person name:

Simon van 't Riet, 1816-1868, flourished 1844-1861
user
first_name: Simon
last_name: van 't Riet
middle_names: []
temporal:
- start: 1816
  end: 1868
  type: life_span
- start: 1844
  end: 1861
  type: flourished
titles: []
extra_info: []
assistant