Parse this person name:

Celestina Sastre-Alemán, 1244-1300, flourished 1260-1271
user
first_name: Celestina
last_name: Sastre-Alemán
middle_names: []
temporal:
- start: 1244
  end: 1300
  type: life_span
- start: 1260
  end: 1271
  type: flourished
titles: []
extra_info: []
assistant