Parse this person name:

Aaron van Riet (1930-1998, flourished 1951-1976)
user
first_name: Aaron
last_name: van Riet
middle_names: []
temporal:
- start: 1930
  end: 1998
  type: life_span
- start: 1951
  end: 1976
  type: flourished
titles: []
extra_info: []
assistant