Parse this person name:

Maritta Sontag, 1865-1915, flourished 1881-1898
user
first_name: Maritta
last_name: Sontag
middle_names: []
temporal:
- start: 1865
  end: 1915
  type: life_span
- start: 1881
  end: 1898
  type: flourished
titles: []
extra_info: []
assistant