Parse this person name:

Robert Harris (1919-1998, flourished 1940-1954)
user
first_name: Robert
last_name: Harris
middle_names: []
temporal:
- start: 1919
  end: 1998
  type: life_span
- start: 1940
  end: 1954
  type: flourished
titles: []
extra_info: []
assistant