Parse this person name:

Grete Schmidtke (1816-1874, flourished 1834-1861)
user
first_name: Grete
last_name: Schmidtke
middle_names: []
temporal:
- start: 1816
  end: 1874
  type: life_span
- start: 1834
  end: 1861
  type: flourished
titles: []
extra_info: []
assistant