Parse this person name:

Bastian Hellwig (1256-1323, flourished 1279-1303)
user
first_name: Bastian
last_name: Hellwig
middle_names: []
temporal:
- start: 1256
  end: 1323
  type: life_span
- start: 1279
  end: 1303
  type: flourished
titles: []
extra_info: []
assistant