Parse this person name:

Folker Winkler, 1811-1868, flourished 1837-1859
user
first_name: Folker
last_name: Winkler
middle_names: []
temporal:
- start: 1811
  end: 1868
  type: life_span
- start: 1837
  end: 1859
  type: flourished
titles: []
extra_info: []
assistant