Parse this person name:

Cato van Herstal (1918-1962, flourished 1940-1957)
user
first_name: Cato
last_name: van Herstal
middle_names: []
temporal:
- start: 1918
  end: 1962
  type: life_span
- start: 1940
  end: 1957
  type: flourished
titles: []
extra_info: []
assistant