Parse this person name:

Zachary Whitney (1739-1815, flourished 1757-1783)
user
first_name: Zachary
last_name: Whitney
middle_names: []
temporal:
- start: 1739
  end: 1815
  type: life_span
- start: 1757
  end: 1783
  type: flourished
titles: []
extra_info: []
assistant