Parse this person name:

Kiki Lucy Valentijn J. R. Hanegraaff (born 1249)
user
first_name: Kiki
last_name: Hanegraaff
middle_names:
- Lucy
- Valentijn
- J.
- R.
temporal:
- start: 1249
  end: null
  type: life_span
titles: []
extra_info: []
assistant