Parse this person name:

Elaine Contreras, 1950-2000, flourished 1972-1991
user
first_name: Elaine
last_name: Contreras
middle_names: []
temporal:
- start: 1950
  end: 2000
  type: life_span
- start: 1972
  end: 1991
  type: flourished
titles: []
extra_info: []
assistant