Parse this person name:

Annekatrin Kühnert (1229-1270, flourished 1246-1265)
user
first_name: Annekatrin
last_name: Kühnert
middle_names: []
temporal:
- start: 1229
  end: 1270
  type: life_span
- start: 1246
  end: 1265
  type: flourished
titles: []
extra_info: []
assistant