Parse this person name:

Lex Arnold (1874-1937, flourished 1897-1910)
user
first_name: Lex
last_name: Arnold
middle_names: []
temporal:
- start: 1874
  end: 1937
  type: life_span
- start: 1897
  end: 1910
  type: flourished
titles: []
extra_info: []
assistant