Parse this person name:

Fem van Saksen-Heijmen, flourished 1892-1918, flourished 1892-1918
user
first_name: Fem
last_name: van Saksen-Heijmen
middle_names: []
temporal:
- start: 1892
  end: 1918
  type: flourished
titles: []
extra_info: []
assistant