Parse this person name:

Alejandra Posada (1760-1809, flourished 1783-1798)
user
first_name: Alejandra
last_name: Posada
middle_names: []
temporal:
- start: 1760
  end: 1809
  type: life_span
- start: 1783
  end: 1798
  type: flourished
titles: []
extra_info: []
assistant