Parse this person name:

Lukas Ketting (1209-1258, flourished 1239-1253)
user
first_name: Lukas
last_name: Ketting
middle_names: []
temporal:
- start: 1209
  end: 1258
  type: life_span
- start: 1239
  end: 1253
  type: flourished
titles: []
extra_info: []
assistant