Parse this person name:

Deanna Sweeney, 1851-1921, flourished 1876-1889
user
first_name: Deanna
last_name: Sweeney
middle_names: []
temporal:
- start: 1851
  end: 1921
  type: life_span
- start: 1876
  end: 1889
  type: flourished
titles: []
extra_info: []
assistant