Parse this person name:

Richard Brown, 1725-1798, flourished 1743-1764
user
first_name: Richard
last_name: Brown
middle_names: []
temporal:
- start: 1725
  end: 1798
  type: life_span
- start: 1743
  end: 1764
  type: flourished
titles: []
extra_info: []
assistant