Parse this person name:

Mariano Rivera, 1220-1297, flourished 1240-1255
user
first_name: Mariano
last_name: Rivera
middle_names: []
temporal:
- start: 1220
  end: 1297
  type: life_span
- start: 1240
  end: 1255
  type: flourished
titles: []
extra_info: []
assistant