Parse this person name:

Lena van Voorst (1928-2007, flourished 1956-1979)
user
first_name: Lena
last_name: van Voorst
middle_names: []
temporal:
- start: 1928
  end: 2007
  type: life_span
- start: 1956
  end: 1979
  type: flourished
titles: []
extra_info: []
assistant