Parse this person name:

Gastón Juan, 1325-1370, flourished 1347-1357
user
first_name: Gastón
last_name: Juan
middle_names: []
temporal:
- start: 1325
  end: 1370
  type: life_span
- start: 1347
  end: 1357
  type: flourished
titles: []
extra_info: []
assistant