Parse this person name:

Gian Treves (1219-1299, flourished 1247-1261)
user
first_name: Gian
last_name: Treves
middle_names: []
temporal:
- start: 1219
  end: 1299
  type: life_span
- start: 1247
  end: 1261
  type: flourished
titles: []
extra_info: []
assistant