Parse this person name:

Sinaida Stey (1937-2005, flourished 1955-1966)
user
first_name: Sinaida
last_name: Stey
middle_names: []
temporal:
- start: 1937
  end: 2005
  type: life_span
- start: 1955
  end: 1966
  type: flourished
titles: []
extra_info: []
assistant