Parse this person name:

Richard Nicholson, 1726-1787, flourished 1753-1782
user
first_name: Richard
last_name: Nicholson
middle_names: []
temporal:
- start: 1726
  end: 1787
  type: life_span
- start: 1753
  end: 1782
  type: flourished
titles: []
extra_info: []
assistant