Parse this person name:

Constantin Kensy (1860-1914, flourished 1877-1891)
user
first_name: Constantin
last_name: Kensy
middle_names: []
temporal:
- start: 1860
  end: 1914
  type: life_span
- start: 1877
  end: 1891
  type: flourished
titles: []
extra_info: []
assistant