Parse this person name:

Gnatz Ehlert, Katharina Asta Nikolai, 1299-1350
user
first_name: Katharina
last_name: Gnatz Ehlert
middle_names:
- Asta
- Nikolai
temporal:
- start: 1299
  end: 1350
  type: life_span
titles: []
extra_info: []
assistant