Parse this person name:

Asta Hethur, 1422-1496, flourished 1437-1457
user
first_name: Asta
last_name: Hethur
middle_names: []
temporal:
- start: 1422
  end: 1496
  type: life_span
- start: 1437
  end: 1457
  type: flourished
titles: []
extra_info: []
assistant