Parse this person name:

Konstantinos Kühnert, 1207-1247, flourished 1236-1242
user
first_name: Konstantinos
last_name: Kühnert
middle_names: []
temporal:
- start: 1207
  end: 1247
  type: life_span
- start: 1236
  end: 1242
  type: flourished
titles: []
extra_info: []
assistant