Parse this person name:

Berat Kallen (1598-1654, flourished 1619-1634)
user
first_name: Berat
last_name: Kallen
middle_names: []
temporal:
- start: 1598
  end: 1654
  type: life_span
- start: 1619
  end: 1634
  type: flourished
titles: []
extra_info: []
assistant