Parse this person name:

Fien Niermann, 1342-1422, flourished 1366-1379
user
first_name: Fien
last_name: Niermann
middle_names: []
temporal:
- start: 1342
  end: 1422
  type: life_span
- start: 1366
  end: 1379
  type: flourished
titles: []
extra_info: []
assistant