Parse this person name:

Roland Weiss (1779-1851, flourished 1802-1821)
user
first_name: Roland
last_name: Weiss
middle_names: []
temporal:
- start: 1779
  end: 1851
  type: life_span
- start: 1802
  end: 1821
  type: flourished
titles: []
extra_info: []
assistant