Parse this person name:

Shannon Allen (1792-1871, flourished 1815-1834)
user
first_name: Shannon
last_name: Allen
middle_names: []
temporal:
- start: 1792
  end: 1871
  type: life_span
- start: 1815
  end: 1834
  type: flourished
titles: []
extra_info: []
assistant