Parse this person name:

Douglas Miller (1719-1798, flourished 1740-1764)
user
first_name: Douglas
last_name: Miller
middle_names: []
temporal:
- start: 1719
  end: 1798
  type: life_span
- start: 1740
  end: 1764
  type: flourished
titles: []
extra_info: []
assistant