Parse this person name:

Luuk Sterkman (1201-1241, flourished 1225-1236)
user
first_name: Luuk
last_name: Sterkman
middle_names: []
temporal:
- start: 1201
  end: 1241
  type: life_span
- start: 1225
  end: 1236
  type: flourished
titles: []
extra_info: []
assistant