Parse this person name:

Sem Rademaker, 1649-1708, flourished 1670-1694
user
first_name: Sem
last_name: Rademaker
middle_names: []
temporal:
- start: 1649
  end: 1708
  type: life_span
- start: 1670
  end: 1694
  type: flourished
titles: []
extra_info: []
assistant