Parse this person name:

Constance Pons (1212-1283, flourished 1234-1251)
user
first_name: Constance
last_name: Pons
middle_names: []
temporal:
- start: 1212
  end: 1283
  type: life_span
- start: 1234
  end: 1251
  type: flourished
titles: []
extra_info: []
assistant