Parse this person name:

Benjamin Palmer, 1930-1973, flourished 1945-1956
user
first_name: Benjamin
last_name: Palmer
middle_names: []
temporal:
- start: 1930
  end: 1973
  type: life_span
- start: 1945
  end: 1956
  type: flourished
titles: []
extra_info: []
assistant