Parse this person name:

Hans-Ulrich Stiffel, 1450-1521, flourished 1471-1484
user
first_name: Hans-Ulrich
last_name: Stiffel
middle_names: []
temporal:
- start: 1450
  end: 1521
  type: life_span
- start: 1471
  end: 1484
  type: flourished
titles: []
extra_info: []
assistant