Parse this person name:

Philippe Grenier, 1748-1794, flourished 1777-1789
user
first_name: Philippe
last_name: Grenier
middle_names: []
temporal:
- start: 1748
  end: 1794
  type: life_span
- start: 1777
  end: 1789
  type: flourished
titles: []
extra_info: []
assistant