Parse this person name:

Alejo Becerra (1448-1521, flourished 1469-1496)
user
first_name: Alejo
last_name: Becerra
middle_names: []
temporal:
- start: 1448
  end: 1521
  type: life_span
- start: 1469
  end: 1496
  type: flourished
titles: []
extra_info: []
assistant