Parse this person name:

Sylvia Proietti (1920-1997, flourished 1939-1959)
user
first_name: Sylvia
last_name: Proietti
middle_names: []
temporal:
- start: 1920
  end: 1997
  type: life_span
- start: 1939
  end: 1959
  type: flourished
titles: []
extra_info: []
assistant