Parse this person name:

Maurits van Veen, 1420-1493, flourished 1446-1474
user
first_name: Maurits
last_name: van Veen
middle_names: []
temporal:
- start: 1420
  end: 1493
  type: life_span
- start: 1446
  end: 1474
  type: flourished
titles: []
extra_info: []
assistant