Parse this person name:

Fem de Wit (1900-1973, flourished 1923-1949)
user
first_name: Fem
last_name: de Wit
middle_names: []
temporal:
- start: 1900
  end: 1973
  type: life_span
- start: 1923
  end: 1949
  type: flourished
titles: []
extra_info: []
assistant