Parse this person name:

Berat van Haarlem, 1933-1997, flourished 1950-1973
user
first_name: Berat
last_name: van Haarlem
middle_names: []
temporal:
- start: 1933
  end: 1997
  type: life_span
- start: 1950
  end: 1973
  type: flourished
titles: []
extra_info: []
assistant