Parse this person name:

Nathan Sims, 1945-2004, flourished 1970-1994
user
first_name: Nathan
last_name: Sims
middle_names: []
temporal:
- start: 1945
  end: 2004
  type: life_span
- start: 1970
  end: 1994
  type: flourished
titles: []
extra_info: []
assistant