Parse this person name:

Witold Bien, 1241-1300, flourished 1262-1276
user
first_name: Witold
last_name: Bien
middle_names: []
temporal:
- start: 1241
  end: 1300
  type: life_span
- start: 1262
  end: 1276
  type: flourished
titles: []
extra_info: []
assistant