Parse this person name:

Lothar Krein, 1397-1472, flourished 1415-1444
user
first_name: Lothar
last_name: Krein
middle_names: []
temporal:
- start: 1397
  end: 1472
  type: life_span
- start: 1415
  end: 1444
  type: flourished
titles: []
extra_info: []
assistant