Parse this person name:

Mackenzie King (1856-1922, flourished 1873-1884)
user
first_name: Mackenzie
last_name: King
middle_names: []
temporal:
- start: 1856
  end: 1922
  type: life_span
- start: 1873
  end: 1884
  type: flourished
titles: []
extra_info: []
assistant