Parse this person name:

Ansgar Langern, 1341-1419, flourished 1360-1383
user
first_name: Ansgar
last_name: Langern
middle_names: []
temporal:
- start: 1341
  end: 1419
  type: life_span
- start: 1360
  end: 1383
  type: flourished
titles: []
extra_info: []
assistant