Parse this person name:

Koen Karels (1328-1396, flourished 1355-1378)
user
first_name: Koen
last_name: Karels
middle_names: []
temporal:
- start: 1328
  end: 1396
  type: life_span
- start: 1355
  end: 1378
  type: flourished
titles: []
extra_info: []
assistant