Parse this person name:

Alfons Klemm (1429-1485, flourished 1446-1463)
user
first_name: Alfons
last_name: Klemm
middle_names: []
temporal:
- start: 1429
  end: 1485
  type: life_span
- start: 1446
  end: 1463
  type: flourished
titles: []
extra_info: []
assistant