Parse this person name:

Gregory Sweeney (1742-1806, flourished 1764-1782)
user
first_name: Gregory
last_name: Sweeney
middle_names: []
temporal:
- start: 1742
  end: 1806
  type: life_span
- start: 1764
  end: 1782
  type: flourished
titles: []
extra_info: []
assistant