Parse this person name:

Sybille Ritter, 1326-1381, flourished 1355-1376
user
first_name: Sybille
last_name: Ritter
middle_names: []
temporal:
- start: 1326
  end: 1381
  type: life_span
- start: 1355
  end: 1376
  type: flourished
titles: []
extra_info: []
assistant