Parse this person name:

Helena Ponci (1897-1939, flourished 1917-1934)
user
first_name: Helena
last_name: Ponci
middle_names: []
temporal:
- start: 1897
  end: 1939
  type: life_span
- start: 1917
  end: 1934
  type: flourished
titles: []
extra_info: []
assistant