Parse this person name:

Benjamin Cardenas, 1220-1260, flourished 1242-1255
user
first_name: Benjamin
last_name: Cardenas
middle_names: []
temporal:
- start: 1220
  end: 1260
  type: life_span
- start: 1242
  end: 1255
  type: flourished
titles: []
extra_info: []
assistant