Parse this person name:

Wieslaw Bien (1399-1473, flourished 1419-1432)
user
first_name: Wieslaw
last_name: Bien
middle_names: []
temporal:
- start: 1399
  end: 1473
  type: life_span
- start: 1419
  end: 1432
  type: flourished
titles: []
extra_info: []
assistant