Parse this person name:

Alexandre Leblanc, 1891-1956, flourished 1910-1921
user
first_name: Alexandre
last_name: Leblanc
middle_names: []
temporal:
- start: 1891
  end: 1956
  type: life_span
- start: 1910
  end: 1921
  type: flourished
titles: []
extra_info: []
assistant