Parse this person name:

Ernest Schaaf, 1851-1924, flourished 1876-1886
user
first_name: Ernest
last_name: Schaaf
middle_names: []
temporal:
- start: 1851
  end: 1924
  type: life_span
- start: 1876
  end: 1886
  type: flourished
titles: []
extra_info: []
assistant