Parse this person name:

Ingolf Jäntsch, 1899-1967, flourished 1919-1940
user
first_name: Ingolf
last_name: Jäntsch
middle_names: []
temporal:
- start: 1899
  end: 1967
  type: life_span
- start: 1919
  end: 1940
  type: flourished
titles: []
extra_info: []
assistant