Parse this person name:

Emmanuel Léger (1699-1758, flourished 1722-1748)
user
first_name: Emmanuel
last_name: Léger
middle_names: []
temporal:
- start: 1699
  end: 1758
  type: life_span
- start: 1722
  end: 1748
  type: flourished
titles: []
extra_info: []
assistant