Parse this person name:

Silvester Dehmel, 1880-1954, flourished 1905-1923
user
first_name: Silvester
last_name: Dehmel
middle_names: []
temporal:
- start: 1880
  end: 1954
  type: life_span
- start: 1905
  end: 1923
  type: flourished
titles: []
extra_info: []
assistant