Parse this person name:

Kevin Allen, 1700-1780, flourished 1721-1736
user
first_name: Kevin
last_name: Allen
middle_names: []
temporal:
- start: 1700
  end: 1780
  type: life_span
- start: 1721
  end: 1736
  type: flourished
titles: []
extra_info: []
assistant