Parse this person name:

René Bertin, 1891-1954, flourished 1906-1920
user
first_name: René
last_name: Bertin
middle_names: []
temporal:
- start: 1891
  end: 1954
  type: life_span
- start: 1906
  end: 1920
  type: flourished
titles: []
extra_info: []
assistant