Parse this person name:

Jeffrey Rivera (1204-1255, flourished 1232-1250)
user
first_name: Jeffrey
last_name: Rivera
middle_names: []
temporal:
- start: 1204
  end: 1255
  type: life_span
- start: 1232
  end: 1250
  type: flourished
titles: []
extra_info: []
assistant