Parse this person name:

Kevin van Boulogne (1252-1327, flourished 1270-1294)
user
first_name: Kevin
last_name: van Boulogne
middle_names: []
temporal:
- start: 1252
  end: 1327
  type: life_span
- start: 1270
  end: 1294
  type: flourished
titles: []
extra_info: []
assistant