Parse this person name:

Kruns Zwart, Merle L. Senna, 1418-1439
user
first_name: Merle
last_name: Kruns Zwart
middle_names:
- L.
- Senna
temporal:
- start: 1418
  end: 1439
  type: life_span
titles: []
extra_info: []
assistant