Parse this person name:

Milan van Loon (1440-1497, flourished 1455-1485)
user
first_name: Milan
last_name: van Loon
middle_names: []
temporal:
- start: 1440
  end: 1497
  type: life_span
- start: 1455
  end: 1485
  type: flourished
titles: []
extra_info: []
assistant