Parse this person name:

Siem Rackham, 1935-2000, flourished 1965-1991
user
first_name: Siem
last_name: Rackham
middle_names: []
temporal:
- start: 1935
  end: 2000
  type: life_span
- start: 1965
  end: 1991
  type: flourished
titles: []
extra_info: []
assistant