Parse this person name:

Sydney Smith, 1850-1890, flourished 1875-1885
user
first_name: Sydney
last_name: Smith
middle_names: []
temporal:
- start: 1850
  end: 1890
  type: life_span
- start: 1875
  end: 1885
  type: flourished
titles: []
extra_info: []
assistant