Parse this person name:

Sylvie Keltenie (1291-1363, flourished 1309-1319)
user
first_name: Sylvie
last_name: Keltenie
middle_names: []
temporal:
- start: 1291
  end: 1363
  type: life_span
- start: 1309
  end: 1319
  type: flourished
titles: []
extra_info: []
assistant