Parse this person name:

Giancarlo Visconti, 1427-1490, flourished 1453-1482
user
first_name: Giancarlo
last_name: Visconti
middle_names: []
temporal:
- start: 1427
  end: 1490
  type: life_span
- start: 1453
  end: 1482
  type: flourished
titles: []
extra_info: []
assistant