Parse this person name:

Sancho Donoso (1269-1331, flourished 1286-1315)
user
first_name: Sancho
last_name: Donoso
middle_names: []
temporal:
- start: 1269
  end: 1331
  type: life_span
- start: 1286
  end: 1315
  type: flourished
titles: []
extra_info: []
assistant