Parse this person name:

Casper van der Wal (1339-1407, flourished 1368-1383)
user
first_name: Casper
last_name: van der Wal
middle_names: []
temporal:
- start: 1339
  end: 1407
  type: life_span
- start: 1368
  end: 1383
  type: flourished
titles: []
extra_info: []
assistant