Parse this person name:

Benigno Arnaiz, 1247-1302, flourished 1265-1280
user
first_name: Benigno
last_name: Arnaiz
middle_names: []
temporal:
- start: 1247
  end: 1302
  type: life_span
- start: 1265
  end: 1280
  type: flourished
titles: []
extra_info: []
assistant