Parse this person name:

Marcello Gelli (1225-1296, flourished 1251-1270)
user
first_name: Marcello
last_name: Gelli
middle_names: []
temporal:
- start: 1225
  end: 1296
  type: life_span
- start: 1251
  end: 1270
  type: flourished
titles: []
extra_info: []
assistant