Parse this person name:

John Porter, 1859-1912, flourished 1877-1890
user
first_name: John
last_name: Porter
middle_names: []
temporal:
- start: 1859
  end: 1912
  type: life_span
- start: 1877
  end: 1890
  type: flourished
titles: []
extra_info: []
assistant