Parse this person name:

Sam van Salmen (1423-1496, flourished 1447-1477)
user
first_name: Sam
last_name: van Salmen
middle_names: []
temporal:
- start: 1423
  end: 1496
  type: life_span
- start: 1447
  end: 1477
  type: flourished
titles: []
extra_info: []
assistant