Parse this person name:

Isabel Sas (1915-1983, flourished 1939-1951)
user
first_name: Isabel
last_name: Sas
middle_names: []
temporal:
- start: 1915
  end: 1983
  type: life_span
- start: 1939
  end: 1951
  type: flourished
titles: []
extra_info: []
assistant