Parse this person name:

Christina Stevens, 1794-1862, flourished 1823-1841
user
first_name: Christina
last_name: Stevens
middle_names: []
temporal:
- start: 1794
  end: 1862
  type: life_span
- start: 1823
  end: 1841
  type: flourished
titles: []
extra_info: []
assistant