Parse this person name:

Mason van de Greef (1900-1977, flourished 1922-1947)
user
first_name: Mason
last_name: van de Greef
middle_names: []
temporal:
- start: 1900
  end: 1977
  type: life_span
- start: 1922
  end: 1947
  type: flourished
titles: []
extra_info: []
assistant