Parse this person name:

Sebastiaan van Gent (1472-1549, flourished 1488-1505)
user
first_name: Sebastiaan
last_name: van Gent
middle_names: []
temporal:
- start: 1472
  end: 1549
  type: life_span
- start: 1488
  end: 1505
  type: flourished
titles: []
extra_info: []
assistant