Parse this person name:

Sem Risma (1815-1862, flourished 1832-1857)
user
first_name: Sem
last_name: Risma
middle_names: []
temporal:
- start: 1815
  end: 1862
  type: life_span
- start: 1832
  end: 1857
  type: flourished
titles: []
extra_info: []
assistant