Parse this person name:

Kasimir Heser, 1859-1937, flourished 1877-1902
user
first_name: Kasimir
last_name: Heser
middle_names: []
temporal:
- start: 1859
  end: 1937
  type: life_span
- start: 1877
  end: 1902
  type: flourished
titles: []
extra_info: []
assistant