Parse this person name:

Kai van 't Riet (1319-1397, flourished 1340-1369)
user
first_name: Kai
last_name: van 't Riet
middle_names: []
temporal:
- start: 1319
  end: 1397
  type: life_span
- start: 1340
  end: 1369
  type: flourished
titles: []
extra_info: []
assistant