Parse this person name:

Nikolaj Siering, 1813-1886, flourished 1841-1867
user
first_name: Nikolaj
last_name: Siering
middle_names: []
temporal:
- start: 1813
  end: 1886
  type: life_span
- start: 1841
  end: 1867
  type: flourished
titles: []
extra_info: []
assistant