Parse this person name:

Pier Gregori (1352-1395, flourished 1367-1390)
user
first_name: Pier
last_name: Gregori
middle_names: []
temporal:
- start: 1352
  end: 1395
  type: life_span
- start: 1367
  end: 1390
  type: flourished
titles: []
extra_info: []
assistant