Parse this person name:

Pleun Bökenkamp (1449-1494, flourished 1469-1489)
user
first_name: Pleun
last_name: Bökenkamp
middle_names: []
temporal:
- start: 1449
  end: 1494
  type: life_span
- start: 1469
  end: 1489
  type: flourished
titles: []
extra_info: []
assistant