Parse this person name:

Clémence Duval, 1777-1854, flourished 1796-1814
user
first_name: Clémence
last_name: Duval
middle_names: []
temporal:
- start: 1777
  end: 1854
  type: life_span
- start: 1796
  end: 1814
  type: flourished
titles: []
extra_info: []
assistant