Parse this person name:

Niek van Bruchem, 1254-1297, flourished 1279-1292
user
first_name: Niek
last_name: van Bruchem
middle_names: []
temporal:
- start: 1254
  end: 1297
  type: life_span
- start: 1279
  end: 1292
  type: flourished
titles: []
extra_info: []
assistant