Parse this person name:

Ella Arent-van Wassenaar, 1918-1997, flourished 1945-1972
user
first_name: Ella
last_name: Arent-van Wassenaar
middle_names: []
temporal:
- start: 1918
  end: 1997
  type: life_span
- start: 1945
  end: 1972
  type: flourished
titles: []
extra_info: []
assistant