Parse this person name:

Mara de Groot (1923-1981, flourished 1950-1976)
user
first_name: Mara
last_name: de Groot
middle_names: []
temporal:
- start: 1923
  end: 1981
  type: life_span
- start: 1950
  end: 1976
  type: flourished
titles: []
extra_info: []
assistant