Parse this person name:

Kai Chotzen, 1225-1286, flourished 1251-1274
user
first_name: Kai
last_name: Chotzen
middle_names: []
temporal:
- start: 1225
  end: 1286
  type: life_span
- start: 1251
  end: 1274
  type: flourished
titles: []
extra_info: []
assistant