Parse this person name:

Alf Lübs, 1377-1441, flourished 1401-1413
user
first_name: Alf
last_name: Lübs
middle_names: []
temporal:
- start: 1377
  end: 1441
  type: life_span
- start: 1401
  end: 1413
  type: flourished
titles: []
extra_info: []
assistant