Parse this person name:

Olaf Graf (1594-1664, flourished 1609-1619)
user
first_name: Olaf
last_name: Graf
middle_names: []
temporal:
- start: 1594
  end: 1664
  type: life_span
- start: 1609
  end: 1619
  type: flourished
titles: []
extra_info: []
assistant