Parse this person name:

Heinz-Walter Wagenknecht (1280-1351, flourished 1308-1321)
user
first_name: Heinz-Walter
last_name: Wagenknecht
middle_names: []
temporal:
- start: 1280
  end: 1351
  type: life_span
- start: 1308
  end: 1321
  type: flourished
titles: []
extra_info: []
assistant