Parse this person name:

Niels van Dokkum (1348-1395, flourished 1366-1385)
user
first_name: Niels
last_name: van Dokkum
middle_names: []
temporal:
- start: 1348
  end: 1395
  type: life_span
- start: 1366
  end: 1385
  type: flourished
titles: []
extra_info: []
assistant