Parse this person name:

Bart van 't Houteveen (1225-1271, flourished 1249-1266)
user
first_name: Bart
last_name: van 't Houteveen
middle_names: []
temporal:
- start: 1225
  end: 1271
  type: life_span
- start: 1249
  end: 1266
  type: flourished
titles: []
extra_info: []
assistant