Parse this person name:

Lena Korstman, 1276-1321, flourished 1304-1316
user
first_name: Lena
last_name: Korstman
middle_names: []
temporal:
- start: 1276
  end: 1321
  type: life_span
- start: 1304
  end: 1316
  type: flourished
titles: []
extra_info: []
assistant