Parse this person name:

Fedor Köster, 1707-1749, flourished 1729-1744
user
first_name: Fedor
last_name: Köster
middle_names: []
temporal:
- start: 1707
  end: 1749
  type: life_span
- start: 1729
  end: 1744
  type: flourished
titles: []
extra_info: []
assistant