Parse this person name:

Siem Greij-Spaan, 1704-1750, flourished 1722-1740
user
first_name: Siem
last_name: Greij-Spaan
middle_names: []
temporal:
- start: 1704
  end: 1750
  type: life_span
- start: 1722
  end: 1740
  type: flourished
titles: []
extra_info: []
assistant