Parse this person name:

Femke van der Velden (1934-2014, flourished 1950-1978)
user
first_name: Femke
last_name: van der Velden
middle_names: []
temporal:
- start: 1934
  end: 2014
  type: life_span
- start: 1950
  end: 1978
  type: flourished
titles: []
extra_info: []
assistant