Parse this person name:

Cornelis Bernaards, 1920-1999, flourished 1939-1962
user
first_name: Cornelis
last_name: Bernaards
middle_names: []
temporal:
- start: 1920
  end: 1999
  type: life_span
- start: 1939
  end: 1962
  type: flourished
titles: []
extra_info: []
assistant