Parse this person name:

Joël van den Velden, 1329-1400, flourished 1350-1378
user
first_name: Joël
last_name: van den Velden
middle_names: []
temporal:
- start: 1329
  end: 1400
  type: life_span
- start: 1350
  end: 1378
  type: flourished
titles: []
extra_info: []
assistant