Parse this person name:

Valero Arnaiz, 1346-1396, flourished 1375-1390
user
first_name: Valero
last_name: Arnaiz
middle_names: []
temporal:
- start: 1346
  end: 1396
  type: life_span
- start: 1375
  end: 1390
  type: flourished
titles: []
extra_info: []
assistant