Parse this person name:

Guenter Herrmann (1420-1460, flourished 1438-1455)
user
first_name: Guenter
last_name: Herrmann
middle_names: []
temporal:
- start: 1420
  end: 1460
  type: life_span
- start: 1438
  end: 1455
  type: flourished
titles: []
extra_info: []
assistant