Parse this person name:

Ethan Stevenson (1441-1501, flourished 1463-1485)
user
first_name: Ethan
last_name: Stevenson
middle_names: []
temporal:
- start: 1441
  end: 1501
  type: life_span
- start: 1463
  end: 1485
  type: flourished
titles: []
extra_info: []
assistant