Parse this person name:

Severino Fioravanti (1225-1305, flourished 1245-1256)
user
first_name: Severino
last_name: Fioravanti
middle_names: []
temporal:
- start: 1225
  end: 1305
  type: life_span
- start: 1245
  end: 1256
  type: flourished
titles: []
extra_info: []
assistant