Parse this person name:

Eva Lether (1231-1298, flourished 1251-1276)
user
first_name: Eva
last_name: Lether
middle_names: []
temporal:
- start: 1231
  end: 1298
  type: life_span
- start: 1251
  end: 1276
  type: flourished
titles: []
extra_info: []
assistant