Parse this person name:

Ivan Cohen (1774-1833, flourished 1798-1814)
user
first_name: Ivan
last_name: Cohen
middle_names: []
temporal:
- start: 1774
  end: 1833
  type: life_span
- start: 1798
  end: 1814
  type: flourished
titles: []
extra_info: []
assistant