Parse this person name:

Reynaldo Rivero (1921-1964, flourished 1945-1959)
user
first_name: Reynaldo
last_name: Rivero
middle_names: []
temporal:
- start: 1921
  end: 1964
  type: life_span
- start: 1945
  end: 1959
  type: flourished
titles: []
extra_info: []
assistant