Parse this person name:

Christina Roberts (1824-1877, flourished 1842-1857)
user
first_name: Christina
last_name: Roberts
middle_names: []
temporal:
- start: 1824
  end: 1877
  type: life_span
- start: 1842
  end: 1857
  type: flourished
titles: []
extra_info: []
assistant