Parse this person name:

Julien Gros, 1619-1677, flourished 1640-1663
user
first_name: Julien
last_name: Gros
middle_names: []
temporal:
- start: 1619
  end: 1677
  type: life_span
- start: 1640
  end: 1663
  type: flourished
titles: []
extra_info: []
assistant