Parse this person name:

Heinz-Günther Graf, 1297-1363, flourished 1325-1338
user
first_name: Heinz-Günther
last_name: Graf
middle_names: []
temporal:
- start: 1297
  end: 1363
  type: life_span
- start: 1325
  end: 1338
  type: flourished
titles: []
extra_info: []
assistant