Parse this person name:

Sean Jessica Brett Sandra R. Juarez, New Ericborough, flourished 1455-1489
user
first_name: Sean
last_name: Juarez
middle_names:
- Jessica
- Brett
- Sandra
- R.
temporal:
- start: 1455
  end: 1489
  type: flourished
titles: []
extra_info:
- New Ericborough
assistant