Parse this person name:

Sam van de Klashorst, Jens F. Q. E., 1209-1276
user
first_name: Jens
last_name: Sam van de Klashorst
middle_names:
- F.
- Q.
- E.
temporal:
- start: 1209
  end: 1276
  type: life_span
titles: []
extra_info: []
assistant