Parse this person name:

van Schweinfurt, Kyan E. (Kyan Esmee), 1251-1304
user
first_name: Kyan
last_name: van Schweinfurt
middle_names:
- Esmee
temporal:
- start: 1251
  end: 1304
  type: life_span
titles: []
extra_info: []
assistant