Parse this person name:

Sem van Duvenvoirde, 1760-1820, flourished 1784-1802
user
first_name: Sem
last_name: van Duvenvoirde
middle_names: []
temporal:
- start: 1760
  end: 1820
  type: life_span
- start: 1784
  end: 1802
  type: flourished
titles: []
extra_info: []
assistant