Parse this person name:

Douglas Black, 1838-1881, flourished 1857-1867
user
first_name: Douglas
last_name: Black
middle_names: []
temporal:
- start: 1838
  end: 1881
  type: life_span
- start: 1857
  end: 1867
  type: flourished
titles: []
extra_info: []
assistant