Parse this person name:

Bianka Koch II'Köhler, 1907-1968, flourished 1937-1951
user
first_name: Bianka
last_name: Koch II'Köhler
middle_names: []
temporal:
- start: 1907
  end: 1968
  type: life_span
- start: 1937
  end: 1951
  type: flourished
titles: []
extra_info: []
assistant