Parse this person name:

Arnd Ernst (1936-1983, flourished 1959-1975)
user
first_name: Arnd
last_name: Ernst
middle_names: []
temporal:
- start: 1936
  end: 1983
  type: life_span
- start: 1959
  end: 1975
  type: flourished
titles: []
extra_info: []
assistant