Parse this person name:

Anne van Geffen (1911-1990, flourished 1926-1944)
user
first_name: Anne
last_name: van Geffen
middle_names: []
temporal:
- start: 1911
  end: 1990
  type: life_span
- start: 1926
  end: 1944
  type: flourished
titles: []
extra_info: []
assistant