Parse this person name:

Sylke Stoll, 1203-1257, flourished 1223-1248
user
first_name: Sylke
last_name: Stoll
middle_names: []
temporal:
- start: 1203
  end: 1257
  type: life_span
- start: 1223
  end: 1248
  type: flourished
titles: []
extra_info: []
assistant