Parse this person name:

Jules van Bergen, 1419-1491, flourished 1447-1457
user
first_name: Jules
last_name: van Bergen
middle_names: []
temporal:
- start: 1419
  end: 1491
  type: life_span
- start: 1447
  end: 1457
  type: flourished
titles: []
extra_info: []
assistant