Parse this person name:

Philip Sterkman, 1835-1885, flourished 1853-1873
user
first_name: Philip
last_name: Sterkman
middle_names: []
temporal:
- start: 1835
  end: 1885
  type: life_span
- start: 1853
  end: 1873
  type: flourished
titles: []
extra_info: []
assistant