Parse this person name:

Giovanni van Stralen (1833-1883, flourished 1849-1871)
user
first_name: Giovanni
last_name: van Stralen
middle_names: []
temporal:
- start: 1833
  end: 1883
  type: life_span
- start: 1849
  end: 1871
  type: flourished
titles: []
extra_info: []
assistant