Parse this person name:

Olga Juvara (1227-1286, flourished 1250-1270)
user
first_name: Olga
last_name: Juvara
middle_names: []
temporal:
- start: 1227
  end: 1286
  type: life_span
- start: 1250
  end: 1270
  type: flourished
titles: []
extra_info: []
assistant