Parse this person name:

Dean van der Horst (1891-1965, flourished 1920-1940)
user
first_name: Dean
last_name: van der Horst
middle_names: []
temporal:
- start: 1891
  end: 1965
  type: life_span
- start: 1920
  end: 1940
  type: flourished
titles: []
extra_info: []
assistant