Parse this person name:

Erna Koch II, 1934-1976, flourished 1957-1971
user
first_name: Erna
last_name: Koch II
middle_names: []
temporal:
- start: 1934
  end: 1976
  type: life_span
- start: 1957
  end: 1971
  type: flourished
titles: []
extra_info: []
assistant