Parse this person name:

Mark Kosten (1416-1456, flourished 1434-1445)
user
first_name: Mark
last_name: Kosten
middle_names: []
temporal:
- start: 1416
  end: 1456
  type: life_span
- start: 1434
  end: 1445
  type: flourished
titles: []
extra_info: []
assistant