Parse this person name:

Kai Aarden, 1214-1260, flourished 1244-1255
user
first_name: Kai
last_name: Aarden
middle_names: []
temporal:
- start: 1214
  end: 1260
  type: life_span
- start: 1244
  end: 1255
  type: flourished
titles: []
extra_info: []
assistant