Parse this person name:

Goran Bernhard F. Langern, Amberg, flourished 1439-1453
user
first_name: Goran
last_name: Langern
middle_names:
- Bernhard
- F.
temporal:
- start: 1439
  end: 1453
  type: flourished
titles: []
extra_info:
- Amberg
assistant