Parse this person name:

Alan Bell (1439-1481, flourished 1467-1476)
user
first_name: Alan
last_name: Bell
middle_names: []
temporal:
- start: 1439
  end: 1481
  type: life_span
- start: 1467
  end: 1476
  type: flourished
titles: []
extra_info: []
assistant