Parse this person name:

Alena Biggen-Fröhlich, flourished 1354-1372, flourished 1354-1372
user
first_name: Alena
last_name: Biggen-Fröhlich
middle_names: []
temporal:
- start: 1354
  end: 1372
  type: flourished
titles: []
extra_info: []
assistant