Parse this person name:

Leopoldo M. (Leopoldo Massimiliano) Sansoni, 1877-1956
user
first_name: Leopoldo
last_name: Sansoni
middle_names:
- Massimiliano
temporal:
- start: 1877
  end: 1956
  type: life_span
titles: []
extra_info: []
assistant