Parse this person name:

Rudi Gnatz (1256-1312, flourished 1274-1287)
user
first_name: Rudi
last_name: Gnatz
middle_names: []
temporal:
- start: 1256
  end: 1312
  type: life_span
- start: 1274
  end: 1287
  type: flourished
titles: []
extra_info: []
assistant