Parse this person name:

Chad Herman-Robertson, 1843-1896, flourished 1859-1876
user
first_name: Chad
last_name: Herman-Robertson
middle_names: []
temporal:
- start: 1843
  end: 1896
  type: life_span
- start: 1859
  end: 1876
  type: flourished
titles: []
extra_info: []
assistant