Parse this person name:

Helene Schwital (1309-1356, flourished 1325-1351)
user
first_name: Helene
last_name: Schwital
middle_names: []
temporal:
- start: 1309
  end: 1356
  type: life_span
- start: 1325
  end: 1351
  type: flourished
titles: []
extra_info: []
assistant