Parse this person name:

Sienna Korsman (1235-1282, flourished 1252-1277)
user
first_name: Sienna
last_name: Korsman
middle_names: []
temporal:
- start: 1235
  end: 1282
  type: life_span
- start: 1252
  end: 1277
  type: flourished
titles: []
extra_info: []
assistant