Parse this person name:

Ivan Beffa (1422-1499, flourished 1446-1476)
user
first_name: Ivan
last_name: Beffa
middle_names: []
temporal:
- start: 1422
  end: 1499
  type: life_span
- start: 1446
  end: 1476
  type: flourished
titles: []
extra_info: []
assistant