Parse this person name:

Sedat Gierschner, 1281-1360, flourished 1297-1309
user
first_name: Sedat
last_name: Gierschner
middle_names: []
temporal:
- start: 1281
  end: 1360
  type: life_span
- start: 1297
  end: 1309
  type: flourished
titles: []
extra_info: []
assistant