Parse this person name:

Twan Arnold, 1667-1726, flourished 1696-1721
user
first_name: Twan
last_name: Arnold
middle_names: []
temporal:
- start: 1667
  end: 1726
  type: life_span
- start: 1696
  end: 1721
  type: flourished
titles: []
extra_info: []
assistant